Microwave, infrared, and Raman spectra, structures, quadrupole coupling constants, barrier to internal rotation, and vibrational assignment of 1‐chloro‐2‐methylpropene

1981 ◽  
Vol 75 (7) ◽  
pp. 3274-3287 ◽  
Author(s):  
G. A. Guirgis ◽  
Y. S. Li ◽  
J. R. Durig
Keyword(s):  
Internal Rotation ◽  
Raman Spectra ◽  
Coupling Constants ◽  
Infrared And Raman Spectra ◽  
Vibrational Assignment ◽  
Quadrupole Coupling

Spectra and Structure of Silicon-Containing Compounds. X. Infrared and Raman Spectra of Methoxytrimethylsilane and Methoxy-D3-Trimethylsilane

1978 ◽  
Vol 32 (5) ◽  
pp. 457-462 ◽  
Author(s):  
J. R. Durig ◽  
B. J. Streusand
Keyword(s):  
Solid State ◽  
Internal Rotation ◽  
Raman Spectra ◽  
Strong Mixing ◽  
Isotopic Substitution ◽  
Infrared And Raman Spectra ◽  
Vibrational Assignment ◽  
Torsional Mode ◽  
Frequency Shifts ◽  
Bending Mode

The infrared (20 to 3100 cm−1) and Raman (10 to 3100 cm−1) spectra of gaseous (CH3)3SiOCH3 and (CH3)3SiOCD3 have been recorded. The Raman spectra of both liquids and the infrared and Raman spectra of the “light” compound in the solid state have also been recorded. A vibrational assignment based upon depolarization ratios, frequency shifts with isotopic substitution, and group frequencies is proposed. The Si—O torsional mode was observed at 67 cm−1 which gives a barrier to internal rotation of 1.02 kcal/mol. Strong mixing of the Si—O—C bending mode with the C—Si—C bends is proposed. The CH3—O torsion was not observed.

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