- Email: [email protected]
prelims, contents pages
Polyhedron 27, issue 18, 12 December 2008
Contents lists available at ScienceDirect
Polyhedron journal homepage: www.elsevier.com/locate/poly
Contents Papers Chun-Yan Guo, Yao-Yu Wang, Kang-Zhen Xu, Hong-Li Zhu, Ping Liu, Qi-Zhen Shi and Shie-Ming Peng Polyhedron 27 (2008) 3529
Crystal structures, bioactivities and fluorescent properties of four diverse complexes with a new symmetric benzimidazolic ligand
Alia C. Tenchiu, Monica Ilis¸ , Florea Dumitras¸ cu, Adrian C. Whitwood and Viorel Cîrcu Polyhedron 27 (2008) 3537
Four new supramolecular complexes based on a new ligand have been constructed and characterized. Interestingly, six or eight-membered hydrogen bonding rings play a key role in the assembly of high-dimensional networks extended by lower dimensional coordination polymers. Among them, complex 2 presents a 3D supramolecular structure with 1D open channels encapsulating NO3) ions.
A series of ortho-metallated Pd(II) complexes containing imine ligands and different types of N-benzoyl thiourea derivatives as co-ligands were prepared and investigated for their liquid crystal properties. Three crystal structures are presented.
Synthesis, characterization and thermal behaviour of ortho-metallated Pd(II) complexes containing N-benzoylthiourea derivatives
Štefan Lörinc, Jozef Švorec, Milan Melník and Marian Koman Polyhedron 27 (2008) 3545
Structure and spectral characterisation of copper(II) meclofenamate complexes
Elsevier Ltd.
Characterisation of Cu(meclof)2(2-pyca)2 has been made based on elemental analyses, electronic, IR and EPR spectra. The crystal and molecular structures of Cu(meclof)2(2-pyca)2 were measured. The carboxyl group of the meclofenamate anions coordinates to the Cu(II) atom as an unidentate or as a chelating ligand. On the basis of the spectroscopic parameters observed, a monomeric structure with a tetragonal bipyramidal geometry around the Cu(II) atom is deduced for Cu(meclof)2L2 and for Cu(meclof)2 Æ H2O a dimeric structure is predicted.
iv
Sadegh Salehzadeh, Reza Golbedaghi, Ian S. Tidmarsh, Nawal K. Al-Rasbi, Harry Adams and Michael D. Ward Polyhedron 27 (2008) 3549
Cd(II) and Mn(II) complexes of a new hexadentate Schiff base ligand derived from an asymmetric tripodal tetraamine and 2-pyridinecarboxaldehyde
Kentaro Yamane, Satoko Hayashi, Waro Nakanishi, Takahiro Sasamori and Norihiro Tokitoh Polyhedron 27 (2008) 3557
Contents
Two new complexes were prepared by the template condensation of a previously known ligand, (L22py), and 2-pyridinecarboxaldehyde in the presence of Cd(NO3)2 Æ 4H2O or MnCl2 Æ 4H2O in equimolar ratios. The resulting compounds were characterized by elemental analysis, IR and single crystal X-ray diffraction, and by NMR in the case of the Cd(II) complex.
The G-dependence for the change of the fine structures from 1 (G = H) to 2 (G = Cl) and 3 (G = Br) in 8-G-1-(p-YC6H4CBCSe)C10H6 are clarified by X-ray analysis, theoretical calculations and NMR data in crystals and in solution.
Fine structures of 8-G-1-(arylethynylselanyl)naphthalenes (G = H, Cl, Br): Factors to control the linear alignment of five G Se–CBC–CAr atoms in crystals and the behavior in solution
Prateek Tyagi, Pragya Gahlot and Rita Kakkar Polyhedron 27 (2008) 3567
Structural aspects of the anti-cancer drug oxaliplatin: A combined theoretical and experimental study
Catherine P. Raptopoulou, Athanassios K. Boudalis, Katerina N. Lazarou, Vassilis Psycharis, Nikos Panopoulos, Michael Fardis, George Diamantopoulos, Jean-Pierre Tuchagues, Alain Mari and George Papavassiliou Polyhedron 27 (2008) 3575
Salicylaldoxime in manganese(III) carboxylate chemistry: Synthesis, structural characterization and physical studies of hexanuclear and polymeric complexes
The conformational behavior of the third generation antitumor drug, oxaliplatin, has been explored by GGA-PW91 density functional calculations and FT-IR spectra. The electronic properties have also been determined in order to understand its enhanced activity with respect to its first generation analogue, cisplatin.
Reactions of oligonuclear manganese clusters with salicylaldoxime in various solvents afforded hexanuclear and polymeric complexes. Slow magnetic relaxation phenomena have been observed for a hexanuclear complex as evidenced by dc and ac magnetic susceptibility measurements.
Contents
Sonia A. Saucedo Anaya, Adelheid Hagenbach and Ulrich Abram Polyhedron 27 (2008) 3587
Tricarbonylrhenium(I) and -technetium(I) complexes with bis(2-pyridyl)phenylphosphine and tris(2-pyridyl)phosphine
Murugan Indrani, Ramasamy Ramasubramanian, Sudalaiandi Kumaresan, Sung Kwon Kang, Min Chen and Miao Du Polyhedron 27 (2008) 3593
Hydrothermal synthesis, crystal structures, and properties of CoII and NiII supramolecular complexes with 2,4,6-trimethyl benzoate and 4,40 bipyridyl
Edwin C. Constable, Egbert Figgemeier, Catherine E. Housecroft, Elaine A. Medlycott, Markus Neuburger, Silvia Schaffner and Sébastien Reymann Polyhedron 27 (2008) 3601
Approaches to wired terpyridine: Bithienyl alkynyl derivatives of 2,20 :60 ,200 -terpyridine and their ruthenium(II) complexes
M. Emin Günay, Osman Dayan, Aytaç Gürhan Gökçe, Muhittin Aygün, Bekir Çetinkaya and Orhan Büyükgüngör Polyhedron 27 (2008) 3607
Preparation and crystal structure of binuclear chloro{6-[[chloro(triphenylphosphine)platinum](mesitylimino)methyl]pyridin-2-yl}bis(triphenylphosphine)platinum(II)
(NEt4)2[Re(CO)3Br3] or (NEt4)2[Tc(CO)3Cl3] react with bis(2-pyridyl)phenylphosphine or tris(2pyridyl)phosphine under formation of neutral tricarbonyl complexes of the composition [M(CO)3(halide)(phosphine)]. The ligands coordinate solely via two of their nitrogen atoms. A reaction of [Re(CO)3(THF)3](NO3) with Ppy3 yielded the complex [Re(CO)3(NO3)(Ppy3-N,N0 )] with a monodentate coordinated nitrato ligand.
Two new supramolecular complexes [Co(tmb)2(4,40 -bpy)2(H2O)2](Htmb)2 (1) and {[Ni(tmb)2(l-4,40 -bpy)2(H2O)2](4,40 -bpy)}n (2), have been prepared hydrothermally and characterized by single crystal X-ray diffraction, elemental analysis, IR, UV/Vis spectra, thermogravimetric analysis and magnetic susceptibility. With the aid of hydrogen bonds, 1 exhibits a square grid network structure and 2 shows the 2-fold interpenetrating framework with CdSO4 topology. Both complexes exhibit antimicrobial activity.
Two approaches to the formation of ruthenium(II) complexes containing ligands with conjugated 2,20 :60 ,200 -terpyridine (tpy), alkynyl and bithienyl units are described, starting with either 40 -(2,20 -bithien-50 -yl)-2,20 :60 ,200 -terpyridine or 40 -ethynyl-2,20 :60 ,200 -terpyridine. The single crystal structure of 40 -(5-bromo-2,2’-bithien-50 -yl)-2,20 :60 ,200 -terpyridine is reported.
Treatment of pyridine-2,6-dicarboxyimidoyl dichloride with [Pt(PPh3)]4 afforded the novel platinacyclic compound (3). Molecular and crystal structures of the compound have been determined by single crystal X-ray diffraction technique.
v
vi
Chun-Wei Yeh, Jhy-Der Chen and Ju-Chun Wang Polyhedron 27 (2008) 3611
Role of ligand conformation in the structural diversity of copper(II) and silver(I) coordination polymers containing the angular dipyridyl ligand bearing amide spacer
Brendan Gleeson, James Claffey, Daniel Ertler, Megan Hogan, Helge Müller-Bunz, Francesca Paradisi, Denise Wallis and Matthias Tacke Polyhedron 27 (2008) 3619
Novel organotin antibacterial and anticancer drugs
Habibe Çakıcı, Aliye Aslı Esenpınar and Mustafa Bulut Polyhedron 27 (2008) 3625
Synthesis and characterization of novel phthalocyanines bearing quaternizable coumarin
The synthesis of novel metal-free and zinc phthalocyanines with four 3-[(2-diethylamino)ethyl]-7-oxo-4-methylcoumarin dye groups on the periphery were prepared by cyclote-
Boris-Marko Kukovec, Zora Popovic´, Bojan Kozlevcˇar and Zvonko Jaglicˇic´ Polyhedron 27 (2008) 3631
3D supramolecular architectures of copper(II) complexes with 6-methylpicolinic and 6-bromopicolinic acid: Synthesis, spectroscopic, thermal and magnetic properties
Contents
The new dipyridyl ligands N,N0 -(methylenedi-pphenylene)bis(pyridine-4-carboxamide), L1, and N,N0 -(methylenedi-p-phenylene)bis(pyridine-3-carboxamide), L2, have been used to prepare complexes of the types [Cu(L1)2X2]¥ (X = Cl, 1 and X = Br, 2), {[Cu(L1)2(DMF)](NO3)2}¥, 3, {[Ag2(L1)2](SO4)}¥, 4, and {[Cu(L2)(DMSO)2(NO3)](NO3)}¥, 5. Complexes 1–3 form 1-D double-stranded polymeric chains. Complex 4 forms 1-D zigzag polymeric chains, which are interlinked through a series of Ag–O interactions to form wavy 1-D ladder like chains, and complex 5 forms 1-D sinusoidal chains.
Three benzyl-substituted bis(cyclopentadienyl)tin dichloride derivatives were synthesised through the hydridolithiation reaction of appropriately substituted fulvenes with LiBEt3H. Within the synthesis of the three organotin compounds are reported along with a structural discussion of an isolated six co-ordinated tin(IV) species. Additionally, the compounds were tested for their antibacterial and anticancer activity.
tramerization of the novel 3-[(2-diethylamino)ethyl]-7-[(3,4-dicyanophenoxy)]-4-methylcoumarin. The novel chromogenic compounds were characterized by elementel analysis, 1H NMR, 13C NMR, MALDI-TOF, IR and UV–Vis spectral data. The electronic spectra exhibit bands of coumarin identity along with characteristic Q and B bands of the phthalocyanine (Pc) core. The IR spectra of all the Pcs showed three characteristic intense bands, at 1704 cm)1 for the lactone carbonyl and two bands at 1489–1604 cm)1 for the conjugated olefinic system.
Three copper(II) complexes with 6-methylpicolinic and 6-bromopicolinic acid were prepared and characterized by spectroscopic (IR, EPR), thermal methods (TGA/DTA) and by magnetic susceptibility measurements. Their crystal structures were determined by X-ray structural analysis and their magnetic properties discussed in correlation with the structure.
C21 C20
C17 C16
C22 C23 Cl2
C19 C18 N2
N1
C15 C14 C5
C8 C6
C4
C9
C7
C13
Sn C1
Cl1 Cl3
C3
C12
C10
C2 C11
O
Contents
Hossein Naeimi and Mohsen Moradian Polyhedron 27 (2008) 3639
Alumina-supported metal(II) Schiff base complexes as heterogeneous catalysts in the highregioselective cleavage of epoxides to halohydrins by using elemental halogen
Bahri Ülküseven, Tülay Bal-Demirci, Mehmet Akkurt, S¸erife Pınar Yalçın and Orhan Büyükgüngör Polyhedron 27 (2008) 3646
Chelate structures of 5-(H/Br)-2-hydroxybenzaldehyde-4-allyl-thiosemicarbazones (H2L): Synthesis and structural characterizations of [Ni(L)(PPh3)] and [Ru(HL)2(PPh3)2]
Masoud Salavati-Niasari, Seyed Nezamoddin Mirsattari and Mehdi Bazarganipour Polyhedron 27 (2008) 3653
Synthesis, characterization and catalytic oxyfunctionalization of cyclohexene with tert-butylhydroperoxide over a manganese(II) complex covalently anchored to multi-wall carbon nanotubes (MWNTs)
Bárbara L. Almeida, Joanna M. Ramos, Otávio Versiani, Marta Sousa, Claudio Alberto Téllez Soto, Ana Lúcia Ramalho Mercê, Antônio Sálvio Mangrich and Judith Felcman Polyhedron 27 (2008) 3662
An integrated experimental and theoretical investigation of the vibrational modes and molecular structure of a new Cu(II)–phosphocreatine complex
A highly regioselective method for the synthesis of b-iodohydrins and b-bromohydrins by direct ring opening of epoxides with elemental halogen in the presence of alumina-supported Mn(II), Co(II), Ni(II) and Cu(II) Schiff-base complexes as new catalysts is described. This method occur regioselectively under mild conditions with high yields in various aprotic solvents, even when sensitive functional groups are present.
The reactions of 5-R-2-hydroxybenzaldehyde4-allyl-thiosemicarbazone {R: H (L1); Br (L2)} with [MII(PPh3)nCl2] (M, n = Ni, 2 and Ru, 3) in a 1:1 molar ratio have given the stable solid complexes [Ni(L)(PPh3)] and [Ru(HL)2(PPh3)2]. While the 1:1 nickel complexes are formed from an ONS donor set of the thiosemicarbazone and the P atom of triphenylphosphine in a square planar structure, the 1:2 ruthenium complexes consist of a couple from each of N, S and P donor atoms in a distorted octahedral geometry.
The chemical modification of multi-wall carbon nanotubes (MWNTs) is an emerging area in material science. In the present study, hydroxyl functionalized manganese(II) Schiff-base has been covalently anchored on modified MWNTs. The new modified MWNTs have been characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron (XPS), thermal analysis, UV–Vis, diffuse reflectance (DRS), FT-IR spectroscopy and elemental analysis. Multi-wall carbon nanotubes covalently anchored manganese(II) complex ([Mn((OH)2-salen)]@MWNTs) catalyze the oxidation of cyclohexene with TBHP.
This paper deals with the synthesis and characterization of a new complex of Cu(II) of stoichiometry [Cu(PCr)(H2O)]. The calculated vibrational spectrum agrees well with the FT-IR experimental spectrum.
vii
R
z
HO
O
+ x2
N N
Cat., r.t. aprotic solvent R
X
Cat.
M O
O Al 2O3
viii
Xiao-Ming Lu, Pei-Zhou Li, Xiu-Teng Wang, Song Gao, Xiao-Jun Wang, Lei Zhou, Chen-Shu Liu, Xi-Na Sui, Jun-He Feng, Yu-Heng Deng, Qiong-Hua Jin, Jing Liu, Na Liu and Jing-Ping Lian Polyhedron 27 (2008) 3669
pH-Directed assembly and magnetic properties of two polynuclear MnII complexes: (D, K){Mn3(phen)2(OOCCH3)6} and 1-D [Mn(phen)Cl2]n
Nassera Tounsi, Laurent Dupont, Aminou Mohamadou, Emmanuel Guillon, Michel Aplincourt and Guillaume Rogez Polyhedron 27 (2008) 3674
Synthesis of new Cu(II), Ni(II) and Co(II) complexes with a bis-amide ligand functionalized with pyridine moieties: Spectral, magnetic and electrochemical studies
Giovanni B. Giovenzana, Zsolt Baranyai, Silvio Aime, Camilla Cavallotti, Daniela Imperio and Giovanni Palmisano Polyhedron 27 (2008) 3683
Contents
When the reaction conditions are deliberately controlled by the pH, two different polynuclear manganese complexes, (D, K)-{Mn3(phen)2 (CH3COO)6} (1) and [Mn(phen)Cl2]n (2) (phen = 1,10-phenanthroline), have been synthesized from the same raw materials. The structural analyses show that 1 has a structure formed by neutral chiral linear trinuclear molecules, while 2 has a structure consisting of one-dimensional infinite chains. A study of the temperature dependent magnetic susceptibilities reveal that 1 is an antiferromagnetically coupled trimer molecule while 2 shows ferromagnetic interactions within the chain.
The reaction of Cu2+, Ni2+ and Co2+ ions with a bis-amide ligand functionalized with pyridine moieties gives square planar Na[Cu2(dmptH)3)(CO3)] and octahedral [Ni2(dmptH)2)2] and [Co2(dmptH)3)(l-OH)] complexes. In all cases coordination occurs to the pyridyl and deprotonated amidic nitrogen atoms and to the oxygen atoms of an hydroxyl and a carbonato group for the copper complexes.
Na[Cu2(dmptH-3)(CO3 )] O
M2+
+
HO
NH NH
HO O
N HOOC
Polyhedron 27 (2008) 3688
Synthesis, EPR spectrum and X-ray structure of tetra-n-butylammonium bis(benzene-1,2dithiolato(2))-j2S,S0 )platinate(III)
[Co2(dmptH-3)(µ-OH)]
NorDATA: a new polyamino-carboxylic ligand based on the rigid bicyclic norbornane skeleton. Its expeditious four-step synthesis is reported with a study of some metal complexes in solution.
NorDATA: An original ligand based on the norbornane skeleton. Synthesis and thermodynamic characterization of metal complexes
Michel M. Bélombé, Justin Nenwa, Evamarie Hey-Hawkins, Peter Lönnecke, Peter Strauch and Klaus R. Koch
[Ni2(dmptH-2)2]
N N
HOOC
The reaction of tetra-n-butylammonium chloride (NBu4Cl), dipotassium tetrachloroplatinate(II) (K2[PtCl4]) and benzene-1,2-dithiol (H2bdt) in ethanol/water readily affords the 1:1 salt of general formula [NBu4][Pt(bdt)2]. Single crystal X-ray structure of this salt shows that the central platinum is in a square-planar coordination geometry of four S atoms, and the frozen solution EPR spectrum and the room temperature magnetic moment of leff = 1.80 B.M. are in accord with the assignment of the Pt(III) oxidation state.
N
COOH COOH
NorDATA
Contents
Bhaskar Poola, Sean W. Hunt, Xiaoping Wang and Michael G. Richmond Polyhedron 27 (2008) 3693
New platinum compounds containing the diphosphine ligand 2-(ferrocenylidene)-4,5bis-(diphenylphosphino)-4-cyclopenten-1,3-dione (fbpcd): Synthesis, redox behavior, and X-ray diffraction structures of PtCl2(fbpcd) and Pt(mnt)(fbpcd)
Eric Burkholder, Fenton Heirtzler, Laura Orian, Wayne Ouellette and Jon Zubieta Polyhedron 27 (2008) 3700
Unusual hydrothermal synthesis of a heteroaromatic macrocyclic complex
Constantinos C. Stoumpos, Theocharis C. Stamatatos, Vassilis Psycharis, Catherine P. Raptopoulou, George Christou and Spyros P. Perlepes Polyhedron 27 (2008) 3703
The new compounds PtCl2(fbpcd) (2) and Pt(mnt)(fbpcd) (3) have been synthesized and the redox properties investigated by cyclic voltammetry and extended Hückel MO calculations. Both 2 and 3 have been fully characterized in solution by IR, UV–Vis, and NMR spectroscopies, and their molecular structures established by X-ray crystallography.
Treatment of 1, MoO3 and Cu(OAc)2 Æ H2O in water under hydrothermal conditions gave planar macrocyclic [2Cu]2+ and [bpy2Cu]2+, imbedded within a matrix of [{Cu2(benzotriazolate)}2Mo8O26] in modest yield. The [2Cu]2+ dication was structurally characterized and its electronic structure calculated using scalar relativistic ZORA DFT methods on ADF2005.01.
Various Mn benzoate sources/methyl 2-pyridyl ketone oxime reaction systems have led to a mononuclear MnII complex and an antiferromagnetically-coupled (S = 0) octanuclear cluster containing the [MnII4MnIII4(l4-O)2(l3OH)2]14+ core.
A new MnII4MnIII4 cluster from the use of methyl 2-pyridyl ketone oxime in manganese carboxylate chemistry: Synthetic, structural and magnetic studies
Angad Kumar Singh, Sanyucta Kumari, T.N. Guru Row, Jai Prakash, K. Ravi Kumar, B. Sridhar and T.R. Rao Polyhedron 27 (2008) 3710
Coordination of a mesogenic Schiff-base with MnII, CoII, NiII, CuII and ZnII: Synthesis, spectral studies and crystal structures
The mesogenic (nematic) Schiff-base, N,N0 di-4-(40 -pentyloxybenzoate)salicylidene diaminoethane, H2L5, crystallizes in the non-centrosymmetric space group Pna21 with Z = 4, and the mesogenic (nematic) isomorphous nickel and copper complexes, [NiL5]2 and [CuL5], in the centrosymmetric space group P21/c with Z = 4; both the NiII and CuII complexes possess cisMN2O2 planes with a low-spin distorted squarepyramidal geometry involving Ni–Ni bonding in the former case and a square-planar geometry in the latter one.
ix
NC
Ph2 P
S
O
Pt NC
S
P Ph2
Pt(mnt)(fbpcd) (3)
O Fe
x
Contents
Erratum to ‘‘Template synthesis and characterization of host (nanopores of zeolite-Y)/guest (Co(II)–tetraoxodithiatetraaza macrocyclic complexes) nanocomposite materials’’ [Polyhedron 27 (2008) 15] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3717
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Polyhedron journal homepage: www.elsevier.com/locate/poly
Contents Papers Chun-Yan Guo, Yao-Yu Wang, Kang-Zhen Xu, Hong-Li Zhu, Ping Liu, Qi-Zhen Shi and Shie-Ming Peng Polyhedron 27 (2008) 3529
Crystal structures, bioactivities and fluorescent properties of four diverse complexes with a new symmetric benzimidazolic ligand
Alia C. Tenchiu, Monica Ilis¸ , Florea Dumitras¸ cu, Adrian C. Whitwood and Viorel Cîrcu Polyhedron 27 (2008) 3537
Four new supramolecular complexes based on a new ligand have been constructed and characterized. Interestingly, six or eight-membered hydrogen bonding rings play a key role in the assembly of high-dimensional networks extended by lower dimensional coordination polymers. Among them, complex 2 presents a 3D supramolecular structure with 1D open channels encapsulating NO3) ions.
A series of ortho-metallated Pd(II) complexes containing imine ligands and different types of N-benzoyl thiourea derivatives as co-ligands were prepared and investigated for their liquid crystal properties. Three crystal structures are presented.
Synthesis, characterization and thermal behaviour of ortho-metallated Pd(II) complexes containing N-benzoylthiourea derivatives
Štefan Lörinc, Jozef Švorec, Milan Melník and Marian Koman Polyhedron 27 (2008) 3545
Structure and spectral characterisation of copper(II) meclofenamate complexes
Elsevier Ltd.
Characterisation of Cu(meclof)2(2-pyca)2 has been made based on elemental analyses, electronic, IR and EPR spectra. The crystal and molecular structures of Cu(meclof)2(2-pyca)2 were measured. The carboxyl group of the meclofenamate anions coordinates to the Cu(II) atom as an unidentate or as a chelating ligand. On the basis of the spectroscopic parameters observed, a monomeric structure with a tetragonal bipyramidal geometry around the Cu(II) atom is deduced for Cu(meclof)2L2 and for Cu(meclof)2 Æ H2O a dimeric structure is predicted.
iv
Sadegh Salehzadeh, Reza Golbedaghi, Ian S. Tidmarsh, Nawal K. Al-Rasbi, Harry Adams and Michael D. Ward Polyhedron 27 (2008) 3549
Cd(II) and Mn(II) complexes of a new hexadentate Schiff base ligand derived from an asymmetric tripodal tetraamine and 2-pyridinecarboxaldehyde
Kentaro Yamane, Satoko Hayashi, Waro Nakanishi, Takahiro Sasamori and Norihiro Tokitoh Polyhedron 27 (2008) 3557
Contents
Two new complexes were prepared by the template condensation of a previously known ligand, (L22py), and 2-pyridinecarboxaldehyde in the presence of Cd(NO3)2 Æ 4H2O or MnCl2 Æ 4H2O in equimolar ratios. The resulting compounds were characterized by elemental analysis, IR and single crystal X-ray diffraction, and by NMR in the case of the Cd(II) complex.
The G-dependence for the change of the fine structures from 1 (G = H) to 2 (G = Cl) and 3 (G = Br) in 8-G-1-(p-YC6H4CBCSe)C10H6 are clarified by X-ray analysis, theoretical calculations and NMR data in crystals and in solution.
Fine structures of 8-G-1-(arylethynylselanyl)naphthalenes (G = H, Cl, Br): Factors to control the linear alignment of five G Se–CBC–CAr atoms in crystals and the behavior in solution
Prateek Tyagi, Pragya Gahlot and Rita Kakkar Polyhedron 27 (2008) 3567
Structural aspects of the anti-cancer drug oxaliplatin: A combined theoretical and experimental study
Catherine P. Raptopoulou, Athanassios K. Boudalis, Katerina N. Lazarou, Vassilis Psycharis, Nikos Panopoulos, Michael Fardis, George Diamantopoulos, Jean-Pierre Tuchagues, Alain Mari and George Papavassiliou Polyhedron 27 (2008) 3575
Salicylaldoxime in manganese(III) carboxylate chemistry: Synthesis, structural characterization and physical studies of hexanuclear and polymeric complexes
The conformational behavior of the third generation antitumor drug, oxaliplatin, has been explored by GGA-PW91 density functional calculations and FT-IR spectra. The electronic properties have also been determined in order to understand its enhanced activity with respect to its first generation analogue, cisplatin.
Reactions of oligonuclear manganese clusters with salicylaldoxime in various solvents afforded hexanuclear and polymeric complexes. Slow magnetic relaxation phenomena have been observed for a hexanuclear complex as evidenced by dc and ac magnetic susceptibility measurements.
Contents
Sonia A. Saucedo Anaya, Adelheid Hagenbach and Ulrich Abram Polyhedron 27 (2008) 3587
Tricarbonylrhenium(I) and -technetium(I) complexes with bis(2-pyridyl)phenylphosphine and tris(2-pyridyl)phosphine
Murugan Indrani, Ramasamy Ramasubramanian, Sudalaiandi Kumaresan, Sung Kwon Kang, Min Chen and Miao Du Polyhedron 27 (2008) 3593
Hydrothermal synthesis, crystal structures, and properties of CoII and NiII supramolecular complexes with 2,4,6-trimethyl benzoate and 4,40 bipyridyl
Edwin C. Constable, Egbert Figgemeier, Catherine E. Housecroft, Elaine A. Medlycott, Markus Neuburger, Silvia Schaffner and Sébastien Reymann Polyhedron 27 (2008) 3601
Approaches to wired terpyridine: Bithienyl alkynyl derivatives of 2,20 :60 ,200 -terpyridine and their ruthenium(II) complexes
M. Emin Günay, Osman Dayan, Aytaç Gürhan Gökçe, Muhittin Aygün, Bekir Çetinkaya and Orhan Büyükgüngör Polyhedron 27 (2008) 3607
Preparation and crystal structure of binuclear chloro{6-[[chloro(triphenylphosphine)platinum](mesitylimino)methyl]pyridin-2-yl}bis(triphenylphosphine)platinum(II)
(NEt4)2[Re(CO)3Br3] or (NEt4)2[Tc(CO)3Cl3] react with bis(2-pyridyl)phenylphosphine or tris(2pyridyl)phosphine under formation of neutral tricarbonyl complexes of the composition [M(CO)3(halide)(phosphine)]. The ligands coordinate solely via two of their nitrogen atoms. A reaction of [Re(CO)3(THF)3](NO3) with Ppy3 yielded the complex [Re(CO)3(NO3)(Ppy3-N,N0 )] with a monodentate coordinated nitrato ligand.
Two new supramolecular complexes [Co(tmb)2(4,40 -bpy)2(H2O)2](Htmb)2 (1) and {[Ni(tmb)2(l-4,40 -bpy)2(H2O)2](4,40 -bpy)}n (2), have been prepared hydrothermally and characterized by single crystal X-ray diffraction, elemental analysis, IR, UV/Vis spectra, thermogravimetric analysis and magnetic susceptibility. With the aid of hydrogen bonds, 1 exhibits a square grid network structure and 2 shows the 2-fold interpenetrating framework with CdSO4 topology. Both complexes exhibit antimicrobial activity.
Two approaches to the formation of ruthenium(II) complexes containing ligands with conjugated 2,20 :60 ,200 -terpyridine (tpy), alkynyl and bithienyl units are described, starting with either 40 -(2,20 -bithien-50 -yl)-2,20 :60 ,200 -terpyridine or 40 -ethynyl-2,20 :60 ,200 -terpyridine. The single crystal structure of 40 -(5-bromo-2,2’-bithien-50 -yl)-2,20 :60 ,200 -terpyridine is reported.
Treatment of pyridine-2,6-dicarboxyimidoyl dichloride with [Pt(PPh3)]4 afforded the novel platinacyclic compound (3). Molecular and crystal structures of the compound have been determined by single crystal X-ray diffraction technique.
v
vi
Chun-Wei Yeh, Jhy-Der Chen and Ju-Chun Wang Polyhedron 27 (2008) 3611
Role of ligand conformation in the structural diversity of copper(II) and silver(I) coordination polymers containing the angular dipyridyl ligand bearing amide spacer
Brendan Gleeson, James Claffey, Daniel Ertler, Megan Hogan, Helge Müller-Bunz, Francesca Paradisi, Denise Wallis and Matthias Tacke Polyhedron 27 (2008) 3619
Novel organotin antibacterial and anticancer drugs
Habibe Çakıcı, Aliye Aslı Esenpınar and Mustafa Bulut Polyhedron 27 (2008) 3625
Synthesis and characterization of novel phthalocyanines bearing quaternizable coumarin
The synthesis of novel metal-free and zinc phthalocyanines with four 3-[(2-diethylamino)ethyl]-7-oxo-4-methylcoumarin dye groups on the periphery were prepared by cyclote-
Boris-Marko Kukovec, Zora Popovic´, Bojan Kozlevcˇar and Zvonko Jaglicˇic´ Polyhedron 27 (2008) 3631
3D supramolecular architectures of copper(II) complexes with 6-methylpicolinic and 6-bromopicolinic acid: Synthesis, spectroscopic, thermal and magnetic properties
Contents
The new dipyridyl ligands N,N0 -(methylenedi-pphenylene)bis(pyridine-4-carboxamide), L1, and N,N0 -(methylenedi-p-phenylene)bis(pyridine-3-carboxamide), L2, have been used to prepare complexes of the types [Cu(L1)2X2]¥ (X = Cl, 1 and X = Br, 2), {[Cu(L1)2(DMF)](NO3)2}¥, 3, {[Ag2(L1)2](SO4)}¥, 4, and {[Cu(L2)(DMSO)2(NO3)](NO3)}¥, 5. Complexes 1–3 form 1-D double-stranded polymeric chains. Complex 4 forms 1-D zigzag polymeric chains, which are interlinked through a series of Ag–O interactions to form wavy 1-D ladder like chains, and complex 5 forms 1-D sinusoidal chains.
Three benzyl-substituted bis(cyclopentadienyl)tin dichloride derivatives were synthesised through the hydridolithiation reaction of appropriately substituted fulvenes with LiBEt3H. Within the synthesis of the three organotin compounds are reported along with a structural discussion of an isolated six co-ordinated tin(IV) species. Additionally, the compounds were tested for their antibacterial and anticancer activity.
tramerization of the novel 3-[(2-diethylamino)ethyl]-7-[(3,4-dicyanophenoxy)]-4-methylcoumarin. The novel chromogenic compounds were characterized by elementel analysis, 1H NMR, 13C NMR, MALDI-TOF, IR and UV–Vis spectral data. The electronic spectra exhibit bands of coumarin identity along with characteristic Q and B bands of the phthalocyanine (Pc) core. The IR spectra of all the Pcs showed three characteristic intense bands, at 1704 cm)1 for the lactone carbonyl and two bands at 1489–1604 cm)1 for the conjugated olefinic system.
Three copper(II) complexes with 6-methylpicolinic and 6-bromopicolinic acid were prepared and characterized by spectroscopic (IR, EPR), thermal methods (TGA/DTA) and by magnetic susceptibility measurements. Their crystal structures were determined by X-ray structural analysis and their magnetic properties discussed in correlation with the structure.
C21 C20
C17 C16
C22 C23 Cl2
C19 C18 N2
N1
C15 C14 C5
C8 C6
C4
C9
C7
C13
Sn C1
Cl1 Cl3
C3
C12
C10
C2 C11
O
Contents
Hossein Naeimi and Mohsen Moradian Polyhedron 27 (2008) 3639
Alumina-supported metal(II) Schiff base complexes as heterogeneous catalysts in the highregioselective cleavage of epoxides to halohydrins by using elemental halogen
Bahri Ülküseven, Tülay Bal-Demirci, Mehmet Akkurt, S¸erife Pınar Yalçın and Orhan Büyükgüngör Polyhedron 27 (2008) 3646
Chelate structures of 5-(H/Br)-2-hydroxybenzaldehyde-4-allyl-thiosemicarbazones (H2L): Synthesis and structural characterizations of [Ni(L)(PPh3)] and [Ru(HL)2(PPh3)2]
Masoud Salavati-Niasari, Seyed Nezamoddin Mirsattari and Mehdi Bazarganipour Polyhedron 27 (2008) 3653
Synthesis, characterization and catalytic oxyfunctionalization of cyclohexene with tert-butylhydroperoxide over a manganese(II) complex covalently anchored to multi-wall carbon nanotubes (MWNTs)
Bárbara L. Almeida, Joanna M. Ramos, Otávio Versiani, Marta Sousa, Claudio Alberto Téllez Soto, Ana Lúcia Ramalho Mercê, Antônio Sálvio Mangrich and Judith Felcman Polyhedron 27 (2008) 3662
An integrated experimental and theoretical investigation of the vibrational modes and molecular structure of a new Cu(II)–phosphocreatine complex
A highly regioselective method for the synthesis of b-iodohydrins and b-bromohydrins by direct ring opening of epoxides with elemental halogen in the presence of alumina-supported Mn(II), Co(II), Ni(II) and Cu(II) Schiff-base complexes as new catalysts is described. This method occur regioselectively under mild conditions with high yields in various aprotic solvents, even when sensitive functional groups are present.
The reactions of 5-R-2-hydroxybenzaldehyde4-allyl-thiosemicarbazone {R: H (L1); Br (L2)} with [MII(PPh3)nCl2] (M, n = Ni, 2 and Ru, 3) in a 1:1 molar ratio have given the stable solid complexes [Ni(L)(PPh3)] and [Ru(HL)2(PPh3)2]. While the 1:1 nickel complexes are formed from an ONS donor set of the thiosemicarbazone and the P atom of triphenylphosphine in a square planar structure, the 1:2 ruthenium complexes consist of a couple from each of N, S and P donor atoms in a distorted octahedral geometry.
The chemical modification of multi-wall carbon nanotubes (MWNTs) is an emerging area in material science. In the present study, hydroxyl functionalized manganese(II) Schiff-base has been covalently anchored on modified MWNTs. The new modified MWNTs have been characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron (XPS), thermal analysis, UV–Vis, diffuse reflectance (DRS), FT-IR spectroscopy and elemental analysis. Multi-wall carbon nanotubes covalently anchored manganese(II) complex ([Mn((OH)2-salen)]@MWNTs) catalyze the oxidation of cyclohexene with TBHP.
This paper deals with the synthesis and characterization of a new complex of Cu(II) of stoichiometry [Cu(PCr)(H2O)]. The calculated vibrational spectrum agrees well with the FT-IR experimental spectrum.
vii
R
z
HO
O
+ x2
N N
Cat., r.t. aprotic solvent R
X
Cat.
M O
O Al 2O3
viii
Xiao-Ming Lu, Pei-Zhou Li, Xiu-Teng Wang, Song Gao, Xiao-Jun Wang, Lei Zhou, Chen-Shu Liu, Xi-Na Sui, Jun-He Feng, Yu-Heng Deng, Qiong-Hua Jin, Jing Liu, Na Liu and Jing-Ping Lian Polyhedron 27 (2008) 3669
pH-Directed assembly and magnetic properties of two polynuclear MnII complexes: (D, K){Mn3(phen)2(OOCCH3)6} and 1-D [Mn(phen)Cl2]n
Nassera Tounsi, Laurent Dupont, Aminou Mohamadou, Emmanuel Guillon, Michel Aplincourt and Guillaume Rogez Polyhedron 27 (2008) 3674
Synthesis of new Cu(II), Ni(II) and Co(II) complexes with a bis-amide ligand functionalized with pyridine moieties: Spectral, magnetic and electrochemical studies
Giovanni B. Giovenzana, Zsolt Baranyai, Silvio Aime, Camilla Cavallotti, Daniela Imperio and Giovanni Palmisano Polyhedron 27 (2008) 3683
Contents
When the reaction conditions are deliberately controlled by the pH, two different polynuclear manganese complexes, (D, K)-{Mn3(phen)2 (CH3COO)6} (1) and [Mn(phen)Cl2]n (2) (phen = 1,10-phenanthroline), have been synthesized from the same raw materials. The structural analyses show that 1 has a structure formed by neutral chiral linear trinuclear molecules, while 2 has a structure consisting of one-dimensional infinite chains. A study of the temperature dependent magnetic susceptibilities reveal that 1 is an antiferromagnetically coupled trimer molecule while 2 shows ferromagnetic interactions within the chain.
The reaction of Cu2+, Ni2+ and Co2+ ions with a bis-amide ligand functionalized with pyridine moieties gives square planar Na[Cu2(dmptH)3)(CO3)] and octahedral [Ni2(dmptH)2)2] and [Co2(dmptH)3)(l-OH)] complexes. In all cases coordination occurs to the pyridyl and deprotonated amidic nitrogen atoms and to the oxygen atoms of an hydroxyl and a carbonato group for the copper complexes.
Na[Cu2(dmptH-3)(CO3 )] O
M2+
+
HO
NH NH
HO O
N HOOC
Polyhedron 27 (2008) 3688
Synthesis, EPR spectrum and X-ray structure of tetra-n-butylammonium bis(benzene-1,2dithiolato(2))-j2S,S0 )platinate(III)
[Co2(dmptH-3)(µ-OH)]
NorDATA: a new polyamino-carboxylic ligand based on the rigid bicyclic norbornane skeleton. Its expeditious four-step synthesis is reported with a study of some metal complexes in solution.
NorDATA: An original ligand based on the norbornane skeleton. Synthesis and thermodynamic characterization of metal complexes
Michel M. Bélombé, Justin Nenwa, Evamarie Hey-Hawkins, Peter Lönnecke, Peter Strauch and Klaus R. Koch
[Ni2(dmptH-2)2]
N N
HOOC
The reaction of tetra-n-butylammonium chloride (NBu4Cl), dipotassium tetrachloroplatinate(II) (K2[PtCl4]) and benzene-1,2-dithiol (H2bdt) in ethanol/water readily affords the 1:1 salt of general formula [NBu4][Pt(bdt)2]. Single crystal X-ray structure of this salt shows that the central platinum is in a square-planar coordination geometry of four S atoms, and the frozen solution EPR spectrum and the room temperature magnetic moment of leff = 1.80 B.M. are in accord with the assignment of the Pt(III) oxidation state.
N
COOH COOH
NorDATA
Contents
Bhaskar Poola, Sean W. Hunt, Xiaoping Wang and Michael G. Richmond Polyhedron 27 (2008) 3693
New platinum compounds containing the diphosphine ligand 2-(ferrocenylidene)-4,5bis-(diphenylphosphino)-4-cyclopenten-1,3-dione (fbpcd): Synthesis, redox behavior, and X-ray diffraction structures of PtCl2(fbpcd) and Pt(mnt)(fbpcd)
Eric Burkholder, Fenton Heirtzler, Laura Orian, Wayne Ouellette and Jon Zubieta Polyhedron 27 (2008) 3700
Unusual hydrothermal synthesis of a heteroaromatic macrocyclic complex
Constantinos C. Stoumpos, Theocharis C. Stamatatos, Vassilis Psycharis, Catherine P. Raptopoulou, George Christou and Spyros P. Perlepes Polyhedron 27 (2008) 3703
The new compounds PtCl2(fbpcd) (2) and Pt(mnt)(fbpcd) (3) have been synthesized and the redox properties investigated by cyclic voltammetry and extended Hückel MO calculations. Both 2 and 3 have been fully characterized in solution by IR, UV–Vis, and NMR spectroscopies, and their molecular structures established by X-ray crystallography.
Treatment of 1, MoO3 and Cu(OAc)2 Æ H2O in water under hydrothermal conditions gave planar macrocyclic [2Cu]2+ and [bpy2Cu]2+, imbedded within a matrix of [{Cu2(benzotriazolate)}2Mo8O26] in modest yield. The [2Cu]2+ dication was structurally characterized and its electronic structure calculated using scalar relativistic ZORA DFT methods on ADF2005.01.
Various Mn benzoate sources/methyl 2-pyridyl ketone oxime reaction systems have led to a mononuclear MnII complex and an antiferromagnetically-coupled (S = 0) octanuclear cluster containing the [MnII4MnIII4(l4-O)2(l3OH)2]14+ core.
A new MnII4MnIII4 cluster from the use of methyl 2-pyridyl ketone oxime in manganese carboxylate chemistry: Synthetic, structural and magnetic studies
Angad Kumar Singh, Sanyucta Kumari, T.N. Guru Row, Jai Prakash, K. Ravi Kumar, B. Sridhar and T.R. Rao Polyhedron 27 (2008) 3710
Coordination of a mesogenic Schiff-base with MnII, CoII, NiII, CuII and ZnII: Synthesis, spectral studies and crystal structures
The mesogenic (nematic) Schiff-base, N,N0 di-4-(40 -pentyloxybenzoate)salicylidene diaminoethane, H2L5, crystallizes in the non-centrosymmetric space group Pna21 with Z = 4, and the mesogenic (nematic) isomorphous nickel and copper complexes, [NiL5]2 and [CuL5], in the centrosymmetric space group P21/c with Z = 4; both the NiII and CuII complexes possess cisMN2O2 planes with a low-spin distorted squarepyramidal geometry involving Ni–Ni bonding in the former case and a square-planar geometry in the latter one.
ix
NC
Ph2 P
S
O
Pt NC
S
P Ph2
Pt(mnt)(fbpcd) (3)
O Fe
x
Contents
Erratum to ‘‘Template synthesis and characterization of host (nanopores of zeolite-Y)/guest (Co(II)–tetraoxodithiatetraaza macrocyclic complexes) nanocomposite materials’’ [Polyhedron 27 (2008) 15] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3717
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