Analysis of torsional spectra of molecules with two internal C/sub 3v/ rotors. 3. Far-infrared and gas phase Raman spectra of dimethylamine-d/sub 0/, -d/sub 3/, and -d/sub 6/

Journal Article · Thu Mar 24 00:00:00 EST 1977 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100521a013· OSTI ID:7292981

Durig, J R; Griffin, M G; Groner, P

The Raman spectra of gaseous dimethylamine-d/sub 0/, -d/sub 3/, and -d/sub 6/ have been recorded between 0 and 4000 cm/sup -1/. The far-infrared spectra have been recorded between 300 and 100 cm/sup -1/. Considerable torsional data are reported and used to characterize the torsional potential function based on a semi-rigid model. The average effective V/sub 3/ for the dimethylamines was found to be 1052 +- 12 cm/sup -1/. The cos--cos coupling term was approximately 15 percent of the effective V/sub 3/, whereas the sine--sine coupling term was of an order of magnitude smaller for (CH/sub 3/)/sub 2/NH and (CD/sub 3/)/sub 2/NH. However, for the mixed isotope the sine--sine term was found to be negligible and the cos--cos about one-half the value obtained for the other two isotopes.

• Research Organization: Univ. of South Carolina, Columbia
• OSTI ID: 7292981
• Journal Information: J. Phys. Chem.; (United States), Vol. 81:6
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
DEUTERIUM
ISOTOPE EFFECTS
AMINES
INFRARED SPECTRA
RAMAN SPECTRA
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
SPECTRA
STABLE ISOTOPES
400303* - Organic Chemistry- Isotope Exchange & Isotope Separation- (-1987)