Vanadium and Niobium Hexadinitrogen and Hexacarbonyl Complexes:  Electron-Spin-Resonance Spectra at 4 K

Electron-spin-resonance (ESR) spectroscopy has been applied to vanadium, niobium (and tantalum) complexes with N2 and CO in the corresponding pure solid matrixes at 4 K. Except for V(CO)6, none has previously been studied by ESR. For these d, S = 1/2, radicals, g values and hyperfine parameters (51V...

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Published in:The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory Molecules, spectroscopy, kinetics, environment, & general theory, 1999-02, Vol.103 (8), p.1025-1028
Main Authors: Parrish, S. H, Weltner, W
Format: Article
Language:English
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Summary:Electron-spin-resonance (ESR) spectroscopy has been applied to vanadium, niobium (and tantalum) complexes with N2 and CO in the corresponding pure solid matrixes at 4 K. Except for V(CO)6, none has previously been studied by ESR. For these d, S = 1/2, radicals, g values and hyperfine parameters (51V, 93Nb nuclei) are obtained and interpreted in terms of axial molecules, distorted from octahedral symmetry by Jahn−Teller effects. There are significant differences with previous work, and the new metal hyperfine data in the two types of complexes are informative.
ISSN:1089-5639
1520-5215
DOI:10.1021/jp983952o