Normal coordinate analysis of MSiH3 moieties in transition metal complexes and comparison to results obtained for silyl halides |
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Authors: | R. Pikl,U. Posset,S. Mö ller,R. Lankat,W. Malisch,W. Kiefer |
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Affiliation: | a Institut für Physikalische Chemie der Universität Würzburg, Marcusstraβe 9-11, D-97070, Würzburg, Germany b Institut für Anorganische Chemie der Universität Würzburg, Am Hubland, D-97074, Würzburg, Germany |
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Abstract: | In order to examine the influence of the transition metal on the metal-silyl fragment MSiH3 and the metal-silicon bond, polarized Raman spectra of the complexes (C5R5)(CO)2FeSiH3 R = H (Cp) (1a), Me (Cp*) (1b)], (C5H5)(CO)(PPh3)FeSiH3 (1c), (C5Me5)(CO)2RuSiH3 (2), (C5R5)(CO)2(PMc3)MoSiH3 [R = H (3a), Me (3b)], and (C5R5)(CO)2(PMe3)WSiH3 [R = H(4a), Me (4b)] have been recorded. The spectral data have been evaluated and interpreted on the basis of a normal coordinate analysis of the MSiH3 core and the derived force constants and potential energy distributions were compared to results obtained for analogous halogen derivatives in the series XSiH3 [X = Br (5), I (6)]. |
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Keywords: | Raman spectrometry Infrared spectrometry Vibrational analysis Normal coordinate analysis Potential energy distribution Silyl complexes Transition metals |
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