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Polyhedron 135, 15 October 2017
Contents lists available at ScienceDirect
Polyhedron journal homepage: www.elsevier.com/locate/poly
Contents Cover Artwork: Bioactivity and electronic/structural features of a photoluminescent Zn(II) complex with an open book structure is compared with Zn(II), Pd(II) siblings whose planarity changes progressively. Seyyed Javad Sabounchei, Ali Hashemi, Abed Yousefi, Parviz Gohari Derakhshandeh, Roya Karamian, Mostafa Asadbegy and Kristof Van Hecke Polyhedron 135 (2017) 1 New pallada- and platinacycle complexes of phosphorus ylide: Synthesis, structural characterization, antioxidant capacity and catalytic behavior towards Mizoroki-Heck reactions
Ana Cristina García-Álvarez, Erandi Bernabé-Pablo, Joaquín Barroso-Flores, Vojtech Jancik, Diego Martínez-Otero, T. Jesús Morales-Juárez and Mónica Moya-Cabrera Polyhedron 135 (2017) 10
Novel pallada- and platinacycle complexes are reported, based on the reaction of phosphorus ylide Ph2P(CH2)2PPh2C(H)C(O)C6H4-m-Br with [MCl2(cod)] (M = Pd or Pt; cod = 1,5-cyclooctadiene). The structures were characterized spectroscopically and crystallographically. The palladacycle was employed as an efficient catalyst in Mizoroki-Heck coupling reactions of aryl chlorides and olefins, while both complexes possess strong antioxidant capacity.
The reaction of MCp3 with the hetero donor-chelating ligand 4,5-bis(diphenylselenophosphoranyl)-1,2,3-triazole afforded the trinuclear complexes (M = Y, Nd, Sm, Gd). X-ray diffraction studies revealed that these compounds possess a trinuclear M3(l3O) core exhibiting short M–Se contacts.
Multinuclear rare-earth metal complexes supported by chalcogen-based 1,2,3-triazole
Samia Benmansour, Irene Pérez-Herráez, Gustavo López-Martínez and Carlos J. Gómez García Polyhedron 135 (2017) 17 Solvent-modulated structures in anilato-based 2D coordination polymers
Elsevier Ltd.
The key role played by three different solvents, with high coordinating affinity towards lanthanoids, in the final structure of the series of (6,3)-2D lattices [Er2(C6O4 Br2)3(G)n]ÆmG (G = H2O, DMSO, DMF,…) is studied and correlated with the size and shape of the solvent molecules.
Contents
K.N. Anees Rahman, Jebiti Haribabu, Chandrasekar Balachandran, Nattamai S.P. Bhuvanesh, Ramasamy Karvembu and Anandram Sreekanth Polyhedron 135 (2017) 26
SNO pincer type copper(II), Nickel(ll), Zinc(ll) complexes with 3-acetyl coumarin thiosemicarbazone ligand have been synthesized and evaluated for its biological applications like DNA/protein binding, DNA cleavage and cytotoxicity studies.
Copper, nickel and zinc complexes of 3-acetyl coumarin thiosemicarbazone: Synthesis, characterization and in vitro evaluation of cytotoxicity and DNA/protein binding properties
Joan Soldevila-Sanmartín, José A. Ayllón, Teresa Calvet, Mercè Font-Bardia and Josefina Pons Polyhedron 135 (2017) 36 Solvent-controlled formation of monomeric and dimeric species containing Cu(II) acetate and 4-phenylpyridine
Elena A. Kuzmina, Tatiana V. Dubinina, Anton V. Zasedatelev, Anton V. Baranikov, Maria I. Makedonskaya, Tolganay B. Egorova and Larisa G. Tomilova Polyhedron 135 (2017) 41
Three complexes with copper(II) acetate and 4-phenylpyridine (4-Phpy), two monomeric [Cu(MeCO2)2(4-Phpy)2(H2O)x] (x = 2 (1), 1.5 (2)) and one dimeric [Cu(MeCO2)2(4-Phpy)]2 were prepared and characterized. The obtaining of the compounds depends on the solvent used in the synthesis. The crystal structure of compound 2 contains two crystallographic independent mononuclear units. Each mononuclear unit forms an independent 1-D chain.
Novel perchlorinated Eu, Er and Lu monophthalocyaninates were prepared. Hybrid nanoparticle conjugates composed of the gold cores (20 and 30 nm in diameter) covered by the layers of target phthalocyanines were obtained. Considerable enhancement in nonlinear absorption was observed for hybrid nanoparticles.
Hexadecachloro-substituted lanthanide(III) phthalocyaninates and their hybrid conjugates with gold nanoparticles: Synthesis and optical properties
Serap Bes¸li, Christopher W. Allen, Ceylan Mutlu Balcı, Gül Kara, Serkan Yes¸ilot and Aylin Uslu Polyhedron 135 (2017) 49 Stereochemical aspects of cyclotriphosphazenes: Prochiral and pseudo-asymmetric phosphorus atoms
Unsymmetrical cyclotriphosphazene derivatives including pseudo-asymmetric phosphorus centers, which are used as a criterion in order to unambiguously define the two meso diastereoisomers, are presented.
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Xiao-Zong Li, Can Zhao, You Zhang, Ting Luo, Yi-Hang Wen and Hai Xu Polyhedron 135 (2017) 60 Self-assembly of a series of metal–organic frameworks with semi-rigid multicarboxylate 3,4-bis(carboxymethoxy)benzoic acid ligands
Alexandre A. Oliveira, Gabriele M.C. Perdigão, Jeferson G. da Silva, Elaine M. Souza-Fagundes and Heloisa Beraldo Polyhedron 135 (2017) 72 Indium(III) complexes with 2-acetylpyridinederived thiosemicarbazones exhibit cytotoxic activity against human leukemia and solid tumor cell lines
Juan H. Mecchia Ortiz and Néstor E. Katz Polyhedron 135 (2017) 79 Modulation of the absorption properties of a novel iron trisbipyridyl complex by introducing peripheral ruthenium ammines
Awatef Ayadi, Diana G. Branzea, Magali Allain, David Canevet, Haluk Dinçalp and Abdelkrim El-Ghayoury Polyhedron 135 (2017) 86 Coordination entities of a pyrene-based iminopyridine ligand: Structural and photophysical properties
Contents
A series of metal–organic frameworks based on designed 3,4-bis(carboxymethoxy)benzoic acid ligands were synthesized, structurally characterized, and the luminescent properties of some complexes have been also investigated.
[In(L)2]NO3 complexes (1–4) were obtained with N(4)-phenyl-2-acetylpyridine thiosemicarbazone, and its N(4)-meta-chlorophenyl-, N(4)-para-chlorophenyland N(4)-para-iodophenyl- derivatives. The cytotoxic effects of the compounds were evaluated against leukemia and solid tumor cells, as well as against non-malignant cells. Complex (1) was active against all tumor cell lineages, with selectivity indexes up to 144.
Introducing ruthenium ammines one at a time in the periphery of a novel iron bipyridyl complex containing three bridging ligands with nitrile groups can modulate the absorption coefficients in the visible region when using Ru(II) and in the NIR region when resorting to Ru(III).
We report herein a pyrene-based iminopyridine ligand L and its corresponding neutral (Zn(II) and Re(I)) and monocationic Cu(I) complexes, formulated as [ZnLCl2] 1, [ReLCl(CO)3] 3 and [CuL2](BF4) 2. Photophysical studies of these compounds showed a monomer type pyrene emission and a higher fluorescence quantum yield for zinc complex 1 as compared with copper 2 and rhenium 3 complexes.
N Cl
Zn N Cl
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Yakov S. Fomenko, Artem L. Gushchin, Aleksey V. Tkachev, Evgene S. Vasilyev, Pavel A. Abramov, Vladimir A. Nadolinny, Mikhail M. Syrokvashin and Maxim N. Sokolov Polyhedron 135 (2017) 96 Fist oxidovanadium complexes containing chiral derivatives of dihydrophenanthroline and diazafluorene
Timothy S. Anderson, Glen G. Briand, Ralf Brüning, Andreas Decken, Matthew J. Margeson, Heidi M. Pickard and Eric E. Trevors Polyhedron 135 (2017) 101
Reactions of VCl3 with chiral derivatives of dihydrophenanthroline (L1) and diazafluorene (L2) result in oxo complexes of V(III) and V(IV) which are further transformed to V(V) complexes in coordinating solvents. The [VVO(L1)(OMe)Cl2] complex was isolated from methanol and characterized by XRD analysis and represent the first oxovanadium complex with chiral diimine ligand.
The reaction of indium(III) salts with polyfunctional dithiolates afforded monoand dinuclear (dithiolato)indium complexes that show moderate reactivity as Lewis acid catalysts.
Synthesis, characterization and reactivity of (dithiolato)indium complexes
Joanna Palion-Gazda, Izabela Gryca, Anna Maron´, Barbara Machura and Rafal Kruszynski Polyhedron 135 (2017) 109 Thiocyanate cadmium(II) coordination compounds with 2,3,5,6-tetrakis(2-pyridyl)pyrazine – Synthesis, structure and luminescent properties
Michael Ramek, Marijana Markovic´, Claudia Loher and Jasmina Sabolovic´ Polyhedron 135 (2017) 121 Pronounced conformational flexibility of physiological (L -histidinato)(L -threoninato)copper(II) in aqueous solution disclosed by a quantum chemical study
Single crystal X-ray analysis and luminescent properties of three novel thiocyanate Cd(II) compounds with a versatile polydentate ligand (2,3,5,6-tetrakis(2-pyridyl)pyrazine – tppz) and thiocyanate anion have been discussed.
The energy landscapes of the ternary physiological (L -histidinato)(L -threoninato)copper(II) complex are calculated in the gas phase and in an implicitly modeled aqueous solution using the density functional theory functional B3LYP. The landscapes differ substantially due to more numerous aqueous than vacuum conformers. Pronounced conformational flexibility of aqueous conformers is established.
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Gabriel A. Andrade, John L. DiMeglio, Eric T. Guardino, Glenn P.A. Yap and Joel Rosenthal Polyhedron 135 (2017) 134 Synthesis and structure of palladium(II) complexes supported by bis-NHC pincer ligands for the electrochemical activation of CO2
Galina I. Shcherbakova, Pavel A. Storozhenko, Tatiana L. Apukhtina, Maxim S. Varfolomeev, Marianna G. Kuznetsova, Aleksander I. Drachev and Artem A. Ashmarin
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A series of pyridyl-spaced bis-NHC complexes of palladium(II) were prepared with substituents of varying steric bulk at the wingtip positions (R = methyl, ethyl, isopropyl, cyclohexyl, mesityl and 2,6-diisopropylphenyl). Solid-state structures for each [(PDCR)Pd(MeCN)](PF6)2 derivative allowed for evaluation of the steric properties of each of the different PDCR ligands. The redox properties and electrochemistry in the presence of CO2 was also assessed for each [(PDCR)Pd(MeCN)](PF6)2 complex.
The paper deals with organomagnesiumoxanealumoxane oligomers synthesized for the first time. Organomagnesiumoxanealumoxane were prepared by chelated alkoxyhydroxyalumoxanes co-condensation with magnesium acetylacetonate.
Polyhedron 135 (2017) 144 Preceramic organomagnesiumoxanealumoxanes: Synthesis, properties and pyrolysis
Magdalena Barwiolek, Julia Sawicka, Magdalena Babinska, Andrzej Wojtczak, Andrzej Surdykowski, Robert Szczesny and Edward Szlyk Polyhedron 135 (2017) 153 Synthesis, spectroscopic characterization, fluorescence properties of new silver(I) complexes with optically active Schiff bases and their application in thin layers deposition
B.P. de Morais, C.L. Donnici, B.L. Rodrigues, G.M. de Lima, J.L. Wardell, M.A.C. Nascimento and R.S. Bitzer Polyhedron 135 (2017) 161 Transesterification reactions of dimethoxycarbonylethyltin- morpholinodithiocarbamate, [(MeO2CCH2CH2)2Sn(MDTC)2]: Synthesis, spectroscopy, X-ray structural characterization and DFT calculations of new diestertin dithiocarbamate complexes – Part II
New silver(I) complexes with optically active Schiff bases were synthesized and structurally and spectroscopically characterized. Silver complexes exhibit fluorescence in solution. The new silver complexes were used in wet methods to obtain thin layers. The layers were amorphous and some of them exhibited fluorescence.
The diestertin(IV) dithiocarbamate complexes [(RO2CCH2CH2)2Sn(MDTC)2] (R = Me (1) or Et (2); MDTC = morpholinodithiocarbamate) have been prepared, characterized and structurally authenticated. Complex (1) has been obtained from the reaction of [(MeO2CCH2CH2)2SnCl2] with sodium morpholinodithiocarbamate (NaMDTC) in CHCl3, and its transesterification reaction with EtOH in the presence of dmso yielded complex (2).
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Jesús-Alberto Alvarez-Hernández, Noemí Andrade-López, José G. Alvarado-Rodríguez, José M. Vásquez-Pérez, Julián Cruz-Borbolla and Vojtech Jancik Polyhedron 135 (2017) 169 Synthesis and structural characterization of 10 Group metal complexes with anionic tridentate S,N,N donor Schiff bases derived from pyridylbenzothiazolines
Three pyridylbenzothiazolines of general formula [(C6H4NCS)(C5H4N)R] (R = C5H4N,
Xiu-Li Wang, Rui Zhang, Xiang Wang, Hong-Yan Lin, Guo-Cheng Liu and Hui-Xiu Zhang Polyhedron 135 (2017) 180 Metal ion-tuned coordination polymers based on different isopolymolybdates grafted by in-situ ligand
C. Rajnák, B. Schäfer, I. Šalitroš, O. Fuhr, M. Ruben and R. Bocˇa Polyhedron 135 (2017) 189 Influence of the charge of the complex unit on the SCO properties in pyrazolyl-pyridinyl-benzimidazole based Fe(II) complexes
ˇ ák, Sayed Ali Drweesh, Ivan Potocˇn Veronika Farkasová, Andrea Lüköová, Danica Sabolová, Ivana D. Radojevic´, Aleksandar Arsenijevic, Dragana Djordjevic and Vladislav Volarevic Polyhedron 135 (2017) 195 Low-dimensional compounds containing bioactive ligands. Part IX: Synthesis, structures, spectra, in vitro antimicrobial and anti-tumor activities and DNA binding of Pd(II) complexes with 7-bromo-quinolin-8-ol
1; R = C6H5, 2; R = H, 3) with chlorides of Ni(II), Pd(II), and Pt(II) were used as precursors for the formation of metallic complexes of the Schiff bases. The opening reactions of the thiazoline ring gave tricoordinate metallic complexes of type [M(Ln)Cl]. Crystals structures of complexes 1a–3a, 1bÆDMSO, and 2c are stabilized by M—M, pÆÆÆ p, or CH—Cl interactions. The predominance of the benzothiazoline (ring form) and the formation of complexes [Pd(Ln)Cl] (n = 1–3) by DFT calculations were evaluated.
Three transition metal coordination polymers based on various isopolymolybdates grafted by in-situ ligand have been synthesized under hydrothermal conditions, and different metal ions may play key roles in inducing such grafted isopolymolybdates and tuning various structures of the title compounds.
We have prepared the ionic and chargeneutral complexes [Fe(pzpybzim)2](BF4)2 and [Fe(pzpybzim-1H)2] of the basic 2-(6pyrazol-1-yl-pyridin-2-yl)-1H-benzimidazole (pzpybzim) ligand. Reactions of this ligand with Fe(II) ion gave a set of hexacoordinate complexes showing thermally induced spin crossover with the critical temperature lying above the room temperature. Furthermore, the photomagnetic investigation confirmed the LIESST effect for both compounds.
[Pd(BrQ)2] (1) and HBrQ[PdCl2(dBrQ)] (2) (BrQ = 7-bromo-quinolin-8-ol) have been prepared as potential anticancer agents. Both complex 2 and BrQ ligand showed significantly higher cytotoxicity against human colorectal cancer cells than cisplatin and this effect is particularly pronounced at low concentrations that can be tested in vivo.
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Cheng-Wei Jin, Qing-Qing Zhao, Ning Ren, Jian-Jun Zhang, Li-Na Geng, Shu-Ping Wang and Shi-Kao Shi Polyhedron 135 (2017) 206 Preparation, crystal structures and properties of a series of novel lanthanide complexes based on 2,3-dimethoxybenzoic acid and 1,10phenanthroline Ten novel lanthanide complexes {[Ln(L)3phen][Ln(L)3phen (C2H5OH)(H2O)]}2 (Ln = La (1), Nd (2)) and [Ln(L)3phen]2 (Ln = Pr (3), Sm (4), Eu (5), Gd (6), Tb (7), Dy (8), Ho (9), Er (10); HL: 2,3-dimethoxybenzoic acid; phen: 1,10-phenanthroline) have been synthesized and characterized by elemental analyses, IR
Silvia Carlotto, Mauro Sambi, Andrea Vittadini and Maurizio Casarin Polyhedron 135 (2017) 216
Contents
spectra and powder X-ray diffraction. Single crystals of complexes 1–5 and 8 were obtained and their structures have been determined by single crystal Xray diffraction. The molecular structures of complexes 1 and 2 are very particular. They both contain two structures with different coordination environments but the same geometric configurations in the molecular structures, which has rarely been reported previously. Complexes 3, 4, 5 and 8 have similar structures with coordination numbers of nine, forming distorted monocapped square antiprisms, and their binuclear structures are stitched together by p–p intermolecular interactions to form 1D chains. The thermal decomposition mechanisms of complexes 1–10 have been studied by the technology of TG and TG-FTIR. The antimicrobial activities of the ten complexes have been explored by the disc diffusion method. The solid-state luminescence of complexes 5 and 7 was also studied, and the two complexes exhibit strong fluorescence, which shows that phen has a better sensitizing effect.
The efficiency of diverse functionals to model the L2,3-edges spectral features of Mn(acac)2 and Mn(acac)3 has been tested.
Mn(acac)2 and Mn(acac)3 complexes, a theoretical modeling of their L2,3-edges X-ray absorption spectra
Jahar Lal Pratihar, Paritosh Mandal, Chia-Her Lin, C.-K. Lai and Dasarath Mal Polyhedron 135 (2017) 224 Azo-amide palladium(II) complexes: Synthesis, characterization and application in C–C crosscoupling reactions
Yu-Long Li, Yu Wu, Jian Wei, Juan Wei, Bin Xie, Li-Ke Zou, Jie Cheng, Zheng Wang, Jiao He, Mei-Li Wu and Pei-Hua Zhao Polyhedron 135 (2017) 231 Investigations on the synthesis, structural characterization and electrochemical properties of diiron azadithiolate complexes and phosphinesubstituted derivatives
The newly designed tridentate ligands bis2,2¢-(N-alkylamino)azobenzene and their corresponding palladium(II) complexes were synthesized and structurally characterized. The new palladium amido complexes were formed through beta proton elimination from the ligand precursor. One of the newly synthesized air and moisture stable palladium(II) amido complexes acts as a potential catalyst towards C–C bond formation for a variety of substrates under mild conditions.
Three diiron azadithiolate complexes Fe2[(l-SCH2)2NCH2CH2CH(CH3)2](CO)6 (1), Fe2[(l-SCH2)2NCH(CH2CH3)2](CO)6 (2), Fe2 [(l-SCH2)2NCH2CH2CH2SCH3](CO)6 (3) and two phosphine-substituted complexes Fe2 [(l-SCH2)2NCH2CH2CH(CH3)2](CO)5 (dppm) (4), Fe2[(l-SCH2)2NCH(CH2CH3)2] (CO)5 (dppm) (5) have been synthesized and characterized by elemental analysis, FTIR, and NMR (1H, 13C, 31P) spectroscopies, and particularly for 1–3 by X-ray crystallography. Especially, complexes 1–5 were found to be catalysts for hydrogen production under electrochemical conditions.
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Ilia V. Pankov, Igor N. Shcherbakov, Valeriy V. Tkachev, Sergey I. Levchenkov, Leonid D. Popov, Vladimir V. Lukov, Sergey M. Aldoshin and Victor A. Kogan Polyhedron 135 (2017) 237 The magnetic exchange interaction in bi- and tetranuclear copper(II) complexes with the bis-azomethine of 1,3-diaminopropanol-2 and 4-hydroxy-3-formylcoumarin with an azide exogenous bridge
Mohammed A. Altahan, Michael A. Beckett, Simon J. Coles and Peter N. Horton Polyhedron 135 (2017) 247 Synthesis and characterization of polyborates templated by cationic copper(II) complexes: Structural (XRD), spectroscopic, thermal (TGA/DSC) and magnetic properties
Azizolla Beheshti, Maryam Bahrani Pour, Carmel T. Abrahams and Hossein Motamedi Polyhedron 135 (2017) 258 The facile preparation and structural characterization of two new isostructural 2D coordination polymers, {[M2(bbit)3Cl2][MCl4]}n [where M = Zn and Cd; bbit = 1,1-bis (3-methyl-4imidazoline-2-thione) butane]
Marcin Swiatkowski and Rafal Kruszynski Polyhedron 135 (2017) 265 Structural insights into the usage of carboxylate ions as molecular pins
The two series of new isostructural coordination compounds containing cobalt, nickel, copper butyrates or isobutyrates and 1,10-phenanthroline were synthesized,
Cu(II) bi- and tetranuclear complexes with a Schiff base ligand – the bis-azomethine of 1,3-diaminopropanol-2 and 4-hydroxy3-formylcoumarin – and an exogenous l2-1,1-azide bridge were synthesized and characterized by X-ray analysis, magnetic measurements and DFT modeling.
The neutral complex [Cu(dmen){B6O7(OH)6}]Æ4H2O is just one of seven copper(II) complex polyborates which self-assemble and crystallize from basic aqueous solutions containing copper(II) complexes and B(OH)3.
Two 2-D coordination polymers of the bbit ligand with Zn(II) and Cd(II) ions have been successfully synthesized. Polymer 1 was synthesized by a one-pot reaction, while compound 2 was prepared via substitution of the Zn(II) ion in 1 by the Cd(II) ion. The synthesized polymers exhibit antibacterial activities.
structurally characterized, and their spectroscopic and thermal properties were investigated. The studied compounds exhibit layered packing in crystal net. The carboxylate anions function as linkers between these layers and allow pinning them together via hydrogen bonds and C– H p intermolecular interactions. Due to placement of carboxylate anions out of coordination moieties, the presented compounds can be ideal standards in spectroscopic determinations of coordination type of but and ibut ions in coordination compounds.
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S.S. Sreejith, Nithya Mohan and M.R. Prathapachandra Kurup Polyhedron 135 (2017) 278 Experimental and theoretical studies on photoluminescent Zn(II) host complex with an open book structure: Implication on potential bioactivity and comparison with its ligand and Zn(II), Pd(II) siblings
Esra Tanrıverdi Eçik, Elif S¸enkuytu, _ ¸og˘lu, Yunus Zorlu and Hanife Ibis Gönül Yenilmez Çiftçi Polyhedron 135 (2017) 296 Synthesis and fluorescence properties of cyclophosphazenes containing thiazole or thiadiazole rings In the present work, a series of cyclophosphazenes containing thiazole or thiadiazole rings (5–8) was synthesized. The hexakis-[3¢-(1¢,2¢,3¢-thiadiazol-4¢yl)phenoxy] (5) and hexakis-[5¢-oxy-2¢-methylbenzothiazole] (6) cyclotriphosphazene derivatives were synthesized from the reactions of hexachlorocyclo-
Ana C. González-Baró, Verónica Ferraresi-Curotto, Reinaldo Pis-Diez, Beatriz S. Parajón Costa, Jackson A.L.C. Resende, Flávia C.S. de Paula, Elene C. Pereira-Maia and Nicolás A. Rey Polyhedron 135 (2017) 303 A novel oxidovanadium(V) compound with an isonicotinohydrazide ligand. A combined experimental and theoretical study and cytotoxity against K562 cells
Crystal and electronic structure of a photoluminescent Zn(II) salen type complex with an open book structure is discussed. Implication of this rarity on potential bioactivity is investigated along with a comparison of its ligand and Zn(II), Pd(II) complexes from the same family with a progressively changing planarity.
triphosphazatriene (1) with 3-(1,2,3-thiadiazol-4-yl)phenol (3) and 5-hydroxy-2-methylbenzothiazole (4), respectively. The octakis-[3¢-(1¢,2¢,3¢-thiadiazol-4¢-yl)phenoxy]cyclotetraphosphazene (7) was obtained from the reaction of octachlorocyclotetraphosphazatetraene (2) with compound 3. Furthermore, heptakis-(5¢-oxy-2¢-methylbenzothiazole)monochlorocyclotetraphosphazene (8) was also synthesized from the reaction of compound 2 with 4. All the obtained compounds (5–8) were fully characterized by elemental analysis and spectroscopic techniques (such as mass, 1H, 13C and 31P NMR). The molecular and crystal structure of 6 was also characterized by X-ray crystallography. Compounds 5–8 are reported for the first time in this study. The fluorescence properties of these cyclophosphazene derivatives (5–8) were investigated in tetrahydrofuran (THF) solution.
A oxidovanadium(V) complex with a hydrazone ligand of isoniazid and o-vanillin was obtained. Its crystal structure was determined. It was fully characterized by means of spectroscopic and electrochemical methods. The assignments were accomplished with the help of theoretical calculations based on DFT methods. It showed cytotoxic activity in K562 cells.
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Polyhedron journal homepage: www.elsevier.com/locate/poly
Contents Cover Artwork: Bioactivity and electronic/structural features of a photoluminescent Zn(II) complex with an open book structure is compared with Zn(II), Pd(II) siblings whose planarity changes progressively. Seyyed Javad Sabounchei, Ali Hashemi, Abed Yousefi, Parviz Gohari Derakhshandeh, Roya Karamian, Mostafa Asadbegy and Kristof Van Hecke Polyhedron 135 (2017) 1 New pallada- and platinacycle complexes of phosphorus ylide: Synthesis, structural characterization, antioxidant capacity and catalytic behavior towards Mizoroki-Heck reactions
Ana Cristina García-Álvarez, Erandi Bernabé-Pablo, Joaquín Barroso-Flores, Vojtech Jancik, Diego Martínez-Otero, T. Jesús Morales-Juárez and Mónica Moya-Cabrera Polyhedron 135 (2017) 10
Novel pallada- and platinacycle complexes are reported, based on the reaction of phosphorus ylide Ph2P(CH2)2PPh2C(H)C(O)C6H4-m-Br with [MCl2(cod)] (M = Pd or Pt; cod = 1,5-cyclooctadiene). The structures were characterized spectroscopically and crystallographically. The palladacycle was employed as an efficient catalyst in Mizoroki-Heck coupling reactions of aryl chlorides and olefins, while both complexes possess strong antioxidant capacity.
The reaction of MCp3 with the hetero donor-chelating ligand 4,5-bis(diphenylselenophosphoranyl)-1,2,3-triazole afforded the trinuclear complexes (M = Y, Nd, Sm, Gd). X-ray diffraction studies revealed that these compounds possess a trinuclear M3(l3O) core exhibiting short M–Se contacts.
Multinuclear rare-earth metal complexes supported by chalcogen-based 1,2,3-triazole
Samia Benmansour, Irene Pérez-Herráez, Gustavo López-Martínez and Carlos J. Gómez García Polyhedron 135 (2017) 17 Solvent-modulated structures in anilato-based 2D coordination polymers
Elsevier Ltd.
The key role played by three different solvents, with high coordinating affinity towards lanthanoids, in the final structure of the series of (6,3)-2D lattices [Er2(C6O4 Br2)3(G)n]ÆmG (G = H2O, DMSO, DMF,…) is studied and correlated with the size and shape of the solvent molecules.
Contents
K.N. Anees Rahman, Jebiti Haribabu, Chandrasekar Balachandran, Nattamai S.P. Bhuvanesh, Ramasamy Karvembu and Anandram Sreekanth Polyhedron 135 (2017) 26
SNO pincer type copper(II), Nickel(ll), Zinc(ll) complexes with 3-acetyl coumarin thiosemicarbazone ligand have been synthesized and evaluated for its biological applications like DNA/protein binding, DNA cleavage and cytotoxicity studies.
Copper, nickel and zinc complexes of 3-acetyl coumarin thiosemicarbazone: Synthesis, characterization and in vitro evaluation of cytotoxicity and DNA/protein binding properties
Joan Soldevila-Sanmartín, José A. Ayllón, Teresa Calvet, Mercè Font-Bardia and Josefina Pons Polyhedron 135 (2017) 36 Solvent-controlled formation of monomeric and dimeric species containing Cu(II) acetate and 4-phenylpyridine
Elena A. Kuzmina, Tatiana V. Dubinina, Anton V. Zasedatelev, Anton V. Baranikov, Maria I. Makedonskaya, Tolganay B. Egorova and Larisa G. Tomilova Polyhedron 135 (2017) 41
Three complexes with copper(II) acetate and 4-phenylpyridine (4-Phpy), two monomeric [Cu(MeCO2)2(4-Phpy)2(H2O)x] (x = 2 (1), 1.5 (2)) and one dimeric [Cu(MeCO2)2(4-Phpy)]2 were prepared and characterized. The obtaining of the compounds depends on the solvent used in the synthesis. The crystal structure of compound 2 contains two crystallographic independent mononuclear units. Each mononuclear unit forms an independent 1-D chain.
Novel perchlorinated Eu, Er and Lu monophthalocyaninates were prepared. Hybrid nanoparticle conjugates composed of the gold cores (20 and 30 nm in diameter) covered by the layers of target phthalocyanines were obtained. Considerable enhancement in nonlinear absorption was observed for hybrid nanoparticles.
Hexadecachloro-substituted lanthanide(III) phthalocyaninates and their hybrid conjugates with gold nanoparticles: Synthesis and optical properties
Serap Bes¸li, Christopher W. Allen, Ceylan Mutlu Balcı, Gül Kara, Serkan Yes¸ilot and Aylin Uslu Polyhedron 135 (2017) 49 Stereochemical aspects of cyclotriphosphazenes: Prochiral and pseudo-asymmetric phosphorus atoms
Unsymmetrical cyclotriphosphazene derivatives including pseudo-asymmetric phosphorus centers, which are used as a criterion in order to unambiguously define the two meso diastereoisomers, are presented.
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Xiao-Zong Li, Can Zhao, You Zhang, Ting Luo, Yi-Hang Wen and Hai Xu Polyhedron 135 (2017) 60 Self-assembly of a series of metal–organic frameworks with semi-rigid multicarboxylate 3,4-bis(carboxymethoxy)benzoic acid ligands
Alexandre A. Oliveira, Gabriele M.C. Perdigão, Jeferson G. da Silva, Elaine M. Souza-Fagundes and Heloisa Beraldo Polyhedron 135 (2017) 72 Indium(III) complexes with 2-acetylpyridinederived thiosemicarbazones exhibit cytotoxic activity against human leukemia and solid tumor cell lines
Juan H. Mecchia Ortiz and Néstor E. Katz Polyhedron 135 (2017) 79 Modulation of the absorption properties of a novel iron trisbipyridyl complex by introducing peripheral ruthenium ammines
Awatef Ayadi, Diana G. Branzea, Magali Allain, David Canevet, Haluk Dinçalp and Abdelkrim El-Ghayoury Polyhedron 135 (2017) 86 Coordination entities of a pyrene-based iminopyridine ligand: Structural and photophysical properties
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A series of metal–organic frameworks based on designed 3,4-bis(carboxymethoxy)benzoic acid ligands were synthesized, structurally characterized, and the luminescent properties of some complexes have been also investigated.
[In(L)2]NO3 complexes (1–4) were obtained with N(4)-phenyl-2-acetylpyridine thiosemicarbazone, and its N(4)-meta-chlorophenyl-, N(4)-para-chlorophenyland N(4)-para-iodophenyl- derivatives. The cytotoxic effects of the compounds were evaluated against leukemia and solid tumor cells, as well as against non-malignant cells. Complex (1) was active against all tumor cell lineages, with selectivity indexes up to 144.
Introducing ruthenium ammines one at a time in the periphery of a novel iron bipyridyl complex containing three bridging ligands with nitrile groups can modulate the absorption coefficients in the visible region when using Ru(II) and in the NIR region when resorting to Ru(III).
We report herein a pyrene-based iminopyridine ligand L and its corresponding neutral (Zn(II) and Re(I)) and monocationic Cu(I) complexes, formulated as [ZnLCl2] 1, [ReLCl(CO)3] 3 and [CuL2](BF4) 2. Photophysical studies of these compounds showed a monomer type pyrene emission and a higher fluorescence quantum yield for zinc complex 1 as compared with copper 2 and rhenium 3 complexes.
N Cl
Zn N Cl
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Yakov S. Fomenko, Artem L. Gushchin, Aleksey V. Tkachev, Evgene S. Vasilyev, Pavel A. Abramov, Vladimir A. Nadolinny, Mikhail M. Syrokvashin and Maxim N. Sokolov Polyhedron 135 (2017) 96 Fist oxidovanadium complexes containing chiral derivatives of dihydrophenanthroline and diazafluorene
Timothy S. Anderson, Glen G. Briand, Ralf Brüning, Andreas Decken, Matthew J. Margeson, Heidi M. Pickard and Eric E. Trevors Polyhedron 135 (2017) 101
Reactions of VCl3 with chiral derivatives of dihydrophenanthroline (L1) and diazafluorene (L2) result in oxo complexes of V(III) and V(IV) which are further transformed to V(V) complexes in coordinating solvents. The [VVO(L1)(OMe)Cl2] complex was isolated from methanol and characterized by XRD analysis and represent the first oxovanadium complex with chiral diimine ligand.
The reaction of indium(III) salts with polyfunctional dithiolates afforded monoand dinuclear (dithiolato)indium complexes that show moderate reactivity as Lewis acid catalysts.
Synthesis, characterization and reactivity of (dithiolato)indium complexes
Joanna Palion-Gazda, Izabela Gryca, Anna Maron´, Barbara Machura and Rafal Kruszynski Polyhedron 135 (2017) 109 Thiocyanate cadmium(II) coordination compounds with 2,3,5,6-tetrakis(2-pyridyl)pyrazine – Synthesis, structure and luminescent properties
Michael Ramek, Marijana Markovic´, Claudia Loher and Jasmina Sabolovic´ Polyhedron 135 (2017) 121 Pronounced conformational flexibility of physiological (L -histidinato)(L -threoninato)copper(II) in aqueous solution disclosed by a quantum chemical study
Single crystal X-ray analysis and luminescent properties of three novel thiocyanate Cd(II) compounds with a versatile polydentate ligand (2,3,5,6-tetrakis(2-pyridyl)pyrazine – tppz) and thiocyanate anion have been discussed.
The energy landscapes of the ternary physiological (L -histidinato)(L -threoninato)copper(II) complex are calculated in the gas phase and in an implicitly modeled aqueous solution using the density functional theory functional B3LYP. The landscapes differ substantially due to more numerous aqueous than vacuum conformers. Pronounced conformational flexibility of aqueous conformers is established.
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Gabriel A. Andrade, John L. DiMeglio, Eric T. Guardino, Glenn P.A. Yap and Joel Rosenthal Polyhedron 135 (2017) 134 Synthesis and structure of palladium(II) complexes supported by bis-NHC pincer ligands for the electrochemical activation of CO2
Galina I. Shcherbakova, Pavel A. Storozhenko, Tatiana L. Apukhtina, Maxim S. Varfolomeev, Marianna G. Kuznetsova, Aleksander I. Drachev and Artem A. Ashmarin
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A series of pyridyl-spaced bis-NHC complexes of palladium(II) were prepared with substituents of varying steric bulk at the wingtip positions (R = methyl, ethyl, isopropyl, cyclohexyl, mesityl and 2,6-diisopropylphenyl). Solid-state structures for each [(PDCR)Pd(MeCN)](PF6)2 derivative allowed for evaluation of the steric properties of each of the different PDCR ligands. The redox properties and electrochemistry in the presence of CO2 was also assessed for each [(PDCR)Pd(MeCN)](PF6)2 complex.
The paper deals with organomagnesiumoxanealumoxane oligomers synthesized for the first time. Organomagnesiumoxanealumoxane were prepared by chelated alkoxyhydroxyalumoxanes co-condensation with magnesium acetylacetonate.
Polyhedron 135 (2017) 144 Preceramic organomagnesiumoxanealumoxanes: Synthesis, properties and pyrolysis
Magdalena Barwiolek, Julia Sawicka, Magdalena Babinska, Andrzej Wojtczak, Andrzej Surdykowski, Robert Szczesny and Edward Szlyk Polyhedron 135 (2017) 153 Synthesis, spectroscopic characterization, fluorescence properties of new silver(I) complexes with optically active Schiff bases and their application in thin layers deposition
B.P. de Morais, C.L. Donnici, B.L. Rodrigues, G.M. de Lima, J.L. Wardell, M.A.C. Nascimento and R.S. Bitzer Polyhedron 135 (2017) 161 Transesterification reactions of dimethoxycarbonylethyltin- morpholinodithiocarbamate, [(MeO2CCH2CH2)2Sn(MDTC)2]: Synthesis, spectroscopy, X-ray structural characterization and DFT calculations of new diestertin dithiocarbamate complexes – Part II
New silver(I) complexes with optically active Schiff bases were synthesized and structurally and spectroscopically characterized. Silver complexes exhibit fluorescence in solution. The new silver complexes were used in wet methods to obtain thin layers. The layers were amorphous and some of them exhibited fluorescence.
The diestertin(IV) dithiocarbamate complexes [(RO2CCH2CH2)2Sn(MDTC)2] (R = Me (1) or Et (2); MDTC = morpholinodithiocarbamate) have been prepared, characterized and structurally authenticated. Complex (1) has been obtained from the reaction of [(MeO2CCH2CH2)2SnCl2] with sodium morpholinodithiocarbamate (NaMDTC) in CHCl3, and its transesterification reaction with EtOH in the presence of dmso yielded complex (2).
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Jesús-Alberto Alvarez-Hernández, Noemí Andrade-López, José G. Alvarado-Rodríguez, José M. Vásquez-Pérez, Julián Cruz-Borbolla and Vojtech Jancik Polyhedron 135 (2017) 169 Synthesis and structural characterization of 10 Group metal complexes with anionic tridentate S,N,N donor Schiff bases derived from pyridylbenzothiazolines
Three pyridylbenzothiazolines of general formula [(C6H4NCS)(C5H4N)R] (R = C5H4N,
Xiu-Li Wang, Rui Zhang, Xiang Wang, Hong-Yan Lin, Guo-Cheng Liu and Hui-Xiu Zhang Polyhedron 135 (2017) 180 Metal ion-tuned coordination polymers based on different isopolymolybdates grafted by in-situ ligand
C. Rajnák, B. Schäfer, I. Šalitroš, O. Fuhr, M. Ruben and R. Bocˇa Polyhedron 135 (2017) 189 Influence of the charge of the complex unit on the SCO properties in pyrazolyl-pyridinyl-benzimidazole based Fe(II) complexes
ˇ ák, Sayed Ali Drweesh, Ivan Potocˇn Veronika Farkasová, Andrea Lüköová, Danica Sabolová, Ivana D. Radojevic´, Aleksandar Arsenijevic, Dragana Djordjevic and Vladislav Volarevic Polyhedron 135 (2017) 195 Low-dimensional compounds containing bioactive ligands. Part IX: Synthesis, structures, spectra, in vitro antimicrobial and anti-tumor activities and DNA binding of Pd(II) complexes with 7-bromo-quinolin-8-ol
1; R = C6H5, 2; R = H, 3) with chlorides of Ni(II), Pd(II), and Pt(II) were used as precursors for the formation of metallic complexes of the Schiff bases. The opening reactions of the thiazoline ring gave tricoordinate metallic complexes of type [M(Ln)Cl]. Crystals structures of complexes 1a–3a, 1bÆDMSO, and 2c are stabilized by M—M, pÆÆÆ p, or CH—Cl interactions. The predominance of the benzothiazoline (ring form) and the formation of complexes [Pd(Ln)Cl] (n = 1–3) by DFT calculations were evaluated.
Three transition metal coordination polymers based on various isopolymolybdates grafted by in-situ ligand have been synthesized under hydrothermal conditions, and different metal ions may play key roles in inducing such grafted isopolymolybdates and tuning various structures of the title compounds.
We have prepared the ionic and chargeneutral complexes [Fe(pzpybzim)2](BF4)2 and [Fe(pzpybzim-1H)2] of the basic 2-(6pyrazol-1-yl-pyridin-2-yl)-1H-benzimidazole (pzpybzim) ligand. Reactions of this ligand with Fe(II) ion gave a set of hexacoordinate complexes showing thermally induced spin crossover with the critical temperature lying above the room temperature. Furthermore, the photomagnetic investigation confirmed the LIESST effect for both compounds.
[Pd(BrQ)2] (1) and HBrQ[PdCl2(dBrQ)] (2) (BrQ = 7-bromo-quinolin-8-ol) have been prepared as potential anticancer agents. Both complex 2 and BrQ ligand showed significantly higher cytotoxicity against human colorectal cancer cells than cisplatin and this effect is particularly pronounced at low concentrations that can be tested in vivo.
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Cheng-Wei Jin, Qing-Qing Zhao, Ning Ren, Jian-Jun Zhang, Li-Na Geng, Shu-Ping Wang and Shi-Kao Shi Polyhedron 135 (2017) 206 Preparation, crystal structures and properties of a series of novel lanthanide complexes based on 2,3-dimethoxybenzoic acid and 1,10phenanthroline Ten novel lanthanide complexes {[Ln(L)3phen][Ln(L)3phen (C2H5OH)(H2O)]}2 (Ln = La (1), Nd (2)) and [Ln(L)3phen]2 (Ln = Pr (3), Sm (4), Eu (5), Gd (6), Tb (7), Dy (8), Ho (9), Er (10); HL: 2,3-dimethoxybenzoic acid; phen: 1,10-phenanthroline) have been synthesized and characterized by elemental analyses, IR
Silvia Carlotto, Mauro Sambi, Andrea Vittadini and Maurizio Casarin Polyhedron 135 (2017) 216
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spectra and powder X-ray diffraction. Single crystals of complexes 1–5 and 8 were obtained and their structures have been determined by single crystal Xray diffraction. The molecular structures of complexes 1 and 2 are very particular. They both contain two structures with different coordination environments but the same geometric configurations in the molecular structures, which has rarely been reported previously. Complexes 3, 4, 5 and 8 have similar structures with coordination numbers of nine, forming distorted monocapped square antiprisms, and their binuclear structures are stitched together by p–p intermolecular interactions to form 1D chains. The thermal decomposition mechanisms of complexes 1–10 have been studied by the technology of TG and TG-FTIR. The antimicrobial activities of the ten complexes have been explored by the disc diffusion method. The solid-state luminescence of complexes 5 and 7 was also studied, and the two complexes exhibit strong fluorescence, which shows that phen has a better sensitizing effect.
The efficiency of diverse functionals to model the L2,3-edges spectral features of Mn(acac)2 and Mn(acac)3 has been tested.
Mn(acac)2 and Mn(acac)3 complexes, a theoretical modeling of their L2,3-edges X-ray absorption spectra
Jahar Lal Pratihar, Paritosh Mandal, Chia-Her Lin, C.-K. Lai and Dasarath Mal Polyhedron 135 (2017) 224 Azo-amide palladium(II) complexes: Synthesis, characterization and application in C–C crosscoupling reactions
Yu-Long Li, Yu Wu, Jian Wei, Juan Wei, Bin Xie, Li-Ke Zou, Jie Cheng, Zheng Wang, Jiao He, Mei-Li Wu and Pei-Hua Zhao Polyhedron 135 (2017) 231 Investigations on the synthesis, structural characterization and electrochemical properties of diiron azadithiolate complexes and phosphinesubstituted derivatives
The newly designed tridentate ligands bis2,2¢-(N-alkylamino)azobenzene and their corresponding palladium(II) complexes were synthesized and structurally characterized. The new palladium amido complexes were formed through beta proton elimination from the ligand precursor. One of the newly synthesized air and moisture stable palladium(II) amido complexes acts as a potential catalyst towards C–C bond formation for a variety of substrates under mild conditions.
Three diiron azadithiolate complexes Fe2[(l-SCH2)2NCH2CH2CH(CH3)2](CO)6 (1), Fe2[(l-SCH2)2NCH(CH2CH3)2](CO)6 (2), Fe2 [(l-SCH2)2NCH2CH2CH2SCH3](CO)6 (3) and two phosphine-substituted complexes Fe2 [(l-SCH2)2NCH2CH2CH(CH3)2](CO)5 (dppm) (4), Fe2[(l-SCH2)2NCH(CH2CH3)2] (CO)5 (dppm) (5) have been synthesized and characterized by elemental analysis, FTIR, and NMR (1H, 13C, 31P) spectroscopies, and particularly for 1–3 by X-ray crystallography. Especially, complexes 1–5 were found to be catalysts for hydrogen production under electrochemical conditions.
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Ilia V. Pankov, Igor N. Shcherbakov, Valeriy V. Tkachev, Sergey I. Levchenkov, Leonid D. Popov, Vladimir V. Lukov, Sergey M. Aldoshin and Victor A. Kogan Polyhedron 135 (2017) 237 The magnetic exchange interaction in bi- and tetranuclear copper(II) complexes with the bis-azomethine of 1,3-diaminopropanol-2 and 4-hydroxy-3-formylcoumarin with an azide exogenous bridge
Mohammed A. Altahan, Michael A. Beckett, Simon J. Coles and Peter N. Horton Polyhedron 135 (2017) 247 Synthesis and characterization of polyborates templated by cationic copper(II) complexes: Structural (XRD), spectroscopic, thermal (TGA/DSC) and magnetic properties
Azizolla Beheshti, Maryam Bahrani Pour, Carmel T. Abrahams and Hossein Motamedi Polyhedron 135 (2017) 258 The facile preparation and structural characterization of two new isostructural 2D coordination polymers, {[M2(bbit)3Cl2][MCl4]}n [where M = Zn and Cd; bbit = 1,1-bis (3-methyl-4imidazoline-2-thione) butane]
Marcin Swiatkowski and Rafal Kruszynski Polyhedron 135 (2017) 265 Structural insights into the usage of carboxylate ions as molecular pins
The two series of new isostructural coordination compounds containing cobalt, nickel, copper butyrates or isobutyrates and 1,10-phenanthroline were synthesized,
Cu(II) bi- and tetranuclear complexes with a Schiff base ligand – the bis-azomethine of 1,3-diaminopropanol-2 and 4-hydroxy3-formylcoumarin – and an exogenous l2-1,1-azide bridge were synthesized and characterized by X-ray analysis, magnetic measurements and DFT modeling.
The neutral complex [Cu(dmen){B6O7(OH)6}]Æ4H2O is just one of seven copper(II) complex polyborates which self-assemble and crystallize from basic aqueous solutions containing copper(II) complexes and B(OH)3.
Two 2-D coordination polymers of the bbit ligand with Zn(II) and Cd(II) ions have been successfully synthesized. Polymer 1 was synthesized by a one-pot reaction, while compound 2 was prepared via substitution of the Zn(II) ion in 1 by the Cd(II) ion. The synthesized polymers exhibit antibacterial activities.
structurally characterized, and their spectroscopic and thermal properties were investigated. The studied compounds exhibit layered packing in crystal net. The carboxylate anions function as linkers between these layers and allow pinning them together via hydrogen bonds and C– H p intermolecular interactions. Due to placement of carboxylate anions out of coordination moieties, the presented compounds can be ideal standards in spectroscopic determinations of coordination type of but and ibut ions in coordination compounds.
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S.S. Sreejith, Nithya Mohan and M.R. Prathapachandra Kurup Polyhedron 135 (2017) 278 Experimental and theoretical studies on photoluminescent Zn(II) host complex with an open book structure: Implication on potential bioactivity and comparison with its ligand and Zn(II), Pd(II) siblings
Esra Tanrıverdi Eçik, Elif S¸enkuytu, _ ¸og˘lu, Yunus Zorlu and Hanife Ibis Gönül Yenilmez Çiftçi Polyhedron 135 (2017) 296 Synthesis and fluorescence properties of cyclophosphazenes containing thiazole or thiadiazole rings In the present work, a series of cyclophosphazenes containing thiazole or thiadiazole rings (5–8) was synthesized. The hexakis-[3¢-(1¢,2¢,3¢-thiadiazol-4¢yl)phenoxy] (5) and hexakis-[5¢-oxy-2¢-methylbenzothiazole] (6) cyclotriphosphazene derivatives were synthesized from the reactions of hexachlorocyclo-
Ana C. González-Baró, Verónica Ferraresi-Curotto, Reinaldo Pis-Diez, Beatriz S. Parajón Costa, Jackson A.L.C. Resende, Flávia C.S. de Paula, Elene C. Pereira-Maia and Nicolás A. Rey Polyhedron 135 (2017) 303 A novel oxidovanadium(V) compound with an isonicotinohydrazide ligand. A combined experimental and theoretical study and cytotoxity against K562 cells
Crystal and electronic structure of a photoluminescent Zn(II) salen type complex with an open book structure is discussed. Implication of this rarity on potential bioactivity is investigated along with a comparison of its ligand and Zn(II), Pd(II) complexes from the same family with a progressively changing planarity.
triphosphazatriene (1) with 3-(1,2,3-thiadiazol-4-yl)phenol (3) and 5-hydroxy-2-methylbenzothiazole (4), respectively. The octakis-[3¢-(1¢,2¢,3¢-thiadiazol-4¢-yl)phenoxy]cyclotetraphosphazene (7) was obtained from the reaction of octachlorocyclotetraphosphazatetraene (2) with compound 3. Furthermore, heptakis-(5¢-oxy-2¢-methylbenzothiazole)monochlorocyclotetraphosphazene (8) was also synthesized from the reaction of compound 2 with 4. All the obtained compounds (5–8) were fully characterized by elemental analysis and spectroscopic techniques (such as mass, 1H, 13C and 31P NMR). The molecular and crystal structure of 6 was also characterized by X-ray crystallography. Compounds 5–8 are reported for the first time in this study. The fluorescence properties of these cyclophosphazene derivatives (5–8) were investigated in tetrahydrofuran (THF) solution.
A oxidovanadium(V) complex with a hydrazone ligand of isoniazid and o-vanillin was obtained. Its crystal structure was determined. It was fully characterized by means of spectroscopic and electrochemical methods. The assignments were accomplished with the help of theoretical calculations based on DFT methods. It showed cytotoxic activity in K562 cells.
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