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The CF 3 Rotor: Torsional vibrations for some CF 3 OX and CF 3 OOX molecules
Author(s) -
Hammaker R. M.,
Fateley W. G.,
Manocha Ajit S.,
Desmarteau D. D.,
Streusand B. J.,
Durig J. R.
Publication year - 1980
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.1250090311
Subject(s) - raman spectroscopy , liquid state , molecule , analytical chemistry (journal) , chemistry , materials science , crystallography , organic chemistry , physics , optics
The low frequency Raman spectra of CF 3 OF (gas, liquid), CF 3 OCI (liquid), CF 3 OOH (gas, liquid), CF 3 OOD (liquid), CF 3 OOF (gas, liquid) and CF 3 OOCI (liquid) have been recorded below 300 cm −1 . The spectra have been assigned and the CF 3 torsional modes were observed for all of these compounds in the liquid state. The assigned frequencies for the liquids and the calculated barriers for the vapor state are: CF 3 OF, ν τ = 144 cm −1 , V 3 = 4.64 kcal mol −1 ; CF 3 OCI, ν τ = 122 cm −1 , V 3 = 4.6 kcal mol −1 ; CF 3 OOH, ν τ = 155 cm −1 , V 3 = 6.0 kcal mol −1 ; CF 3 OOF, ν τ = 78 cm −1 , V 3 = 2.9 kcal mol −1 ; and CF 3 OOCI, ν τ = 80 cm −1 , V 3 = 3.7 kcal mol −1 . The assignments are discussed and the barriers are compared to the corresponding quantities in some similar molecules.