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Vibrational spectrum and conformation of cyclopropyldimethylborane
Author(s) -
Odom J. D.,
Saari S. V.,
Nease A. B.,
Szafran Z.,
Durig J. R.
Publication year - 1982
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250120204
Subject(s) - raman spectroscopy , conformational isomerism , infrared , depolarization , chemistry , antisymmetric relation , infrared spectroscopy , vibrational spectrum , molecular physics , symmetry (geometry) , nuclear magnetic resonance , spectral line , crystallography , analytical chemistry (journal) , molecule , physics , optics , geometry , organic chemistry , medicine , mathematics , mathematical physics , endocrinology , astronomy
The infrared (3500–50 cm −1 ) and Raman spectra (3500‐10 cm −1 ) have been recorded for cyclopropyldimethylborane in both the gaseous and solid states. Additionally, the Raman spectrum of the liquid was recorded and qualitative depolarization values were obtained. Only one conformation has been found in all three physical states and, on the basis of the polarized nature of the Raman band assigned as the BC 2 antisymmetric stretch, this conformer is identified as being the bisected structure with C s molecular symmetry. A complete vibrational assignment, except for the BC 2 and two methyl torsional modes, is proposed based on the depolarization data, infrared gas phase band contours, and group frequencies. These results are compared to the corresponding data for several other organoboranes.