Analysis of torsional spectra of molecules with two internal C/3v/ rotors. III - Far-infrared and gas phase Raman spectra of dimethylamine-d0, -d3, and -d6
Analysis of torsional spectra of molecules with two internal C/3v/ rotors. III - Far-infrared and gas phase Raman spectra of dimethylamine-d0, -d3, and -d6
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使用两个内部 C/3v/ 转子分析分子扭转光谱。
DOI：
10.1021/j100521a013
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发表时间：
1977
期刊：
影响因子：
--
通讯作者：
P. Groner
中科院分区：
文献类型：
--
作者：
J. Durig;M. Griffin;P. Groner
在0~4000 cm/sup~(-1)范围内，记录了气态二甲胺-d/sub0/、-d/sub3/和-d/sub6/的拉曼光谱。远红外光谱的记录范围为300~100 cm/sup~(-1)/。报道了大量的扭转数据，并使用这些数据来表征基于半刚性模型的扭转势函数。二甲胺的平均有效V/sub3/为1052±12 cm/sup-1/。CoS-CoS耦合项约为有效V/sub3/的15%，而对于(CH/sub3/)/sub2/NH和(Cd/sub3/)/sub2/NH，正弦-正弦耦合项小一个数量级。然而，对于混合同位素，正弦-正弦项被发现可以忽略不计，而cos-cos大约是其他两种同位素的值的一半。
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.