Isobutane Infrared Bands: Partial Rotational Assignments, ab Initio Calculations, and Local Mode Analysis

被引:11
作者
Bernath, Peter F. [1 ]
Bittner, Dror M. [1 ]
Sibert, Edwin L., III [2 ]
机构
[1] Old Dominion Univ, Dept Chem & Biochem, Norfolk, VA 23529 USA
[2] Univ Wisconsin, Dept Chem, Madison, WI 53706 USA
关键词
VIBRATIONAL-SPECTRA; INTERNAL-ROTATION; RAMAN-SPECTRA; SPECTROSCOPY; FREQUENCIES; ABSORPTION; PROPANE; METHYL; BUTANE;
D O I
10.1021/acs.jpca.9b03321
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
High-resolution infrared spectra of the symmetric top isobutane CH(CH3)(3) were assigned with the help of ab initio calculations. The strong parallel band nu(5)(a(1)) with an origin at 1396.54741(76) cm(-1) and the nu(4)(a(1)) mode, the CH2 scissors, at 1478.20363(41) cm(-1) were rotationally analyzed. The bands in the C-H stretching region were assigned with the help of an anharmonic calculation and a local mode analysis.
引用
收藏
页码:6185 / 6193
页数:9
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