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Comment on “bond lengths between aluminium and different complex ions”
Volume 162, number I, 2
CHEMICAL PHYSICS LETTERS
6 October 1989
COMMENT COMMENT ON “BOND LENGTHS BETWEEN ALUMINIUM AND DIFFERENT COMPLEX IONS” Christian K. J0RGENSEN Section de Chimie,
Universitb de Genbve, CH I21 1 Geneva 4, Switzerland
Received 7 July 1989
The title paper invokes ideas inapplicable to aiuminium (III) compounds.
The title paper [ 1 ] seems to have two prominent problems: The electrostatic expression, eq. (2), fell into a certain disrepute [ 2-4 ] after the Solvay meeting in May 1956, but in any case it should involve the mean value ( r4) and not (r-4). A troublesome ontological aspect is that closedshell Al (III) neither has non-bonding 3d electrons, nor would 3 to 7 eV photons t+ able to excite these (absent ) electrons to antibonding orbitals, indicating the size of 1ODq. Suffkiently oxidizing central atoms [ 5 ] such as 5d4 osmium (IV) and 5d5 iridium (IV) may, to a fair approximation, show this
quantity as the wavenumber difirence strong electron transfer bands.
between
References [ 1 ] B.R. Jovanic, V.V. Urosevic, Lj.D. Zekovic and B. Radenkovic, Chem. Phys. Letters 158 (1989) 172. [ 21 J. Glerup, 0. Mensted and C.E. Schiffer, Inorg. Chem. 15 (1976) 1399. [ 31 C.K. Jorgensen, M. Faucher and D. Garcia, Chem. Phys. Letters 128 (1986) 250. [4] C.K. Jorgensen, Chem. Phys. Letters 153 (1988) 185. [ 51C.K.Jmgensen, Progr. Inorg. Chem. 12 (1970) 101.
163
CHEMICAL PHYSICS LETTERS
6 October 1989
COMMENT COMMENT ON “BOND LENGTHS BETWEEN ALUMINIUM AND DIFFERENT COMPLEX IONS” Christian K. J0RGENSEN Section de Chimie,
Universitb de Genbve, CH I21 1 Geneva 4, Switzerland
Received 7 July 1989
The title paper invokes ideas inapplicable to aiuminium (III) compounds.
The title paper [ 1 ] seems to have two prominent problems: The electrostatic expression, eq. (2), fell into a certain disrepute [ 2-4 ] after the Solvay meeting in May 1956, but in any case it should involve the mean value ( r4) and not (r-4). A troublesome ontological aspect is that closedshell Al (III) neither has non-bonding 3d electrons, nor would 3 to 7 eV photons t+ able to excite these (absent ) electrons to antibonding orbitals, indicating the size of 1ODq. Suffkiently oxidizing central atoms [ 5 ] such as 5d4 osmium (IV) and 5d5 iridium (IV) may, to a fair approximation, show this
quantity as the wavenumber difirence strong electron transfer bands.
between
References [ 1 ] B.R. Jovanic, V.V. Urosevic, Lj.D. Zekovic and B. Radenkovic, Chem. Phys. Letters 158 (1989) 172. [ 21 J. Glerup, 0. Mensted and C.E. Schiffer, Inorg. Chem. 15 (1976) 1399. [ 31 C.K. Jorgensen, M. Faucher and D. Garcia, Chem. Phys. Letters 128 (1986) 250. [4] C.K. Jorgensen, Chem. Phys. Letters 153 (1988) 185. [ 51C.K.Jmgensen, Progr. Inorg. Chem. 12 (1970) 101.
163