The C-N stretching band of methylamine

被引:12
|
作者
Gulaczyk, Iwona [1 ]
Kreglewski, Marek [1 ]
Horneman, Veli-Matti [2 ]
机构
[1] Adam Mickiewicz Univ Poznan, Fac Chem, PL-60780 Poznan, Poland
[2] Univ Oulu, Dept Phys Sci, Oulu, Finland
关键词
Methylamine; C-N stretching; High resolution infrared spectrum; Loomis-Wood diagram; Coriolis and Fermi resonances; ASSIGNMENTS; VIBRATION; SPECTRUM; AMINE; STATE;
D O I
10.1016/j.jms.2011.09.003
中图分类号
O64 [物理化学(理论化学)、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号
070203 ; 070304 ; 081704 ; 1406 ;
摘要
For the first time the C-N stretching band of methylamine has been assigned in a high resolution spectrum in the region from 960 to 1200 cm(-1). Over 3500 transitions with a resolution of 0.001 cm(-1) for K from 0 to 12 have been assigned. A global fit has been made and the band center was determined at 1044.8134(33) cm(-1). Several branches of the C-N band are strongly perturbed through Fermi and Coriolis type resonances. The sources of the perturbations have been identified - the fourth torsional state 4 nu(15) and the combination state nu(9) + nu(15). An attempt to fit the observed transitions to a single state model based on the group theoretical formalism of Ohashi and Hougen [1] resulted in the standard deviation of 0.04 cm(-1). (C) 2011 Elsevier Inc. All rights reserved.
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页码:70 / 74
页数:5
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