Vibrational study of rotational isomerism in dialkyldichlorosilanes Cl2SiR2 (R=Bun, Hexn) |
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| Authors: | L. A. Leites S. S. Bukalov L. E. Vinogradova R. West C. -H. Yuan |
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| Affiliation: | (1) A. N. Nesmeyanov Institute of Organoelement Compounds, Scientific and Technical Center on Raman Spectroscopy, Russian Academy of Sciences, 28 ul. Vavilova, 117813 Moscow, Russian Federation;(2) Department of Chemistry, University of Wisconsin, Madison, Wisconsin, USA |
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| Abstract: | IR and Raman spectra of Cl2SiR2 (R=Hexn (1), Bun (2)) in liquid, glassy, and polycrystalline states were investigated. In the liquid and glassy states, rotational isomerism about the Si−C and C−C bonds takes place, the compounds being mixtures of conformers. In the crystalline state, only one, the most stable conformer (all-trans in relation to the C−C bonds), persists. Compound2, in contrast to1, was found to crystallize on cooling with great difficulty. Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 2, pp. 315–319, February, 1997. |
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| Keywords: | dialkylsilanes conformational isomerism Raman and IR spectroscopy |
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