Vibrational Assignments of Ethylmethylsilane

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概要

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• The infrared spectra of ethylmethylsilane, CH<SUB>3</SUB>CH<SUB>2</SUB>SiH<SUB>2</SUB>CH<SUB>3</SUB>, its deuterated species, CH<SUB>3</SUB>CH<SUB>2</SUB>SiD<SUB>2</SUB>CH<SUB>3</SUB>, and a mixture of CH<SUB>3</SUB>CH<SUB>2</SUB>SiHDCH<SUB>3</SUB>, CH<SUB>3</SUB>CH<SUB>2</SUB>SiH<SUB>2</SUB>CH<SUB>3</SUB>, and CH<SUB>3</SUB>CH<SUB>2</SUB>SiD<SUB>2</SUB>CH<SUB>3</SUB> have been measured in the gaseous, liquid, and crystalline states. The Raman spectrum of ethylmethylsilane has also been measured in the liquid state. Vibrational assignments have been made in relation to the rotational isomerism, on the basis of a modified Urey-Bradley force field, in which the force constants have been transferred from those for dimethylsilane and ethylsilane. The conclusion regarding the molecular forms of the rotational isomers, which has been obtained from the experimental evidence of the SiHD deformation vibrations for an asymmetrically-deuterated species, CH<SUB>3</SUB>CH<SUB>2</SUB>SiHDCH<SUB>3</SUB>, can be considered to be also supported by the present results of the normal vibration calculations.

• 公益社団法人 日本化学会の論文

著者

• Ohno Keiichi

  Department Of Chemistry Faculty Of Science Hiroshima University

• Hayashi Michiro

  Department of Chemistry, Faculty of Science, Hiroshima University

• Murata Hiromu

  Department of Chemistry, Faculty of Science, Hiroshima University

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