环硫乙烷ν5 和ν15 态的同步辐射远红外光谱。

Synchrotron far infrared spectroscopy of the ground, ν5, and ν15 states of thiirane.

机构信息

School of Chemistry, Monash University, Wellington Rd., Clayton, Victoria 3800, Australia.

出版信息

J Chem Phys. 2012 Aug 28;137(8):084306. doi: 10.1063/1.4747191.

Abstract

The high-resolution (0.001 cm(-1)) spectrum of thiirane has been recorded at the far-infrared beamline at the Australian synchrotron between 760-400 cm(-1) and 170-10 cm(-1). Ro-vibrational transitions of the highly Coriolis coupled ν(5) (628.1 cm(-1)) and ν(15) (669.7 cm(-1)) fundamentals, as well as pure rotational far-IR transitions have been assigned, and rotational, centrifugal distortion, and Coriolis interaction parameters determined. ν(15) gains the vast majority of its intensity from an interesting Coriolis intensity stealing mechanism, which is also outlined.

摘要

已在澳大利亚同步加速器远红外射束线（760-400 cm(-1) 和 170-10 cm(-1)）之间记录下噻吩的高分辨率（0.001 cm(-1))光谱。已分配了高度科里奥利耦合 ν(5)（628.1 cm(-1)) 和 ν(15)（669.7 cm(-1))基频的 rovibrational 跃迁，以及纯旋转远红外跃迁，并确定了旋转、离心变形和科里奥利相互作用参数。ν(15) 获得了绝大多数的强度来自一个有趣的科里奥利强度窃取机制，该机制也在文中概述。