HCOOD的ν5带的高分辨率傅里叶变换红外光谱

High-Resolution FTIR Spectrum of the nu5 Band of HCOOD.

作者信息

Goh KL, Ong PP, Tan TL, Teo HH, Wang WF

机构信息

Faculty of Science, National University of Singapore, Lower Kent Ridge Road, 119260, Singapore

出版信息

J Mol Spectrosc. 1998 Oct;191(2):343-347. doi: 10.1006/jmsp.1998.7640.

DOI:10.1006/jmsp.1998.7640

PMID:9753570

Abstract

The high-resolution Fourier transform infrared spectrum of HCOOD has been measured in the nu5 region between 1120 and 1220 cm-1 with a resolution of 0.004 cm-1. As expected for an in-plane vibrational fundamental mode, the nu5 band is a hybrid band consisting of both a-type and b-type transitions. Using the Watson's A-reduced Hamiltonian in the Ir representation, 1943 infrared transitions have been assigned and fitted to give 12 rovibrational constants for the v5 = 1 state. The nu5 band is primarily A type with a band center at 1177.09378 +/- 0.00002 cm-1. It is found that nu5 is slightly perturbed by the nearby 2nu7. About 90 perturbed transitions were identified. Copyright 1998 Academic Press.

摘要

已在1120至1220厘米⁻¹的ν₅区域以0.004厘米⁻¹的分辨率测量了HCOOD的高分辨率傅里叶变换红外光谱。正如面内振动基模所预期的那样，ν₅带是一个由a型和b型跃迁组成的混合带。使用Ir表示中的沃森A简化哈密顿量，已指定并拟合了1943条红外跃迁，以给出v₅ = 1态的12个振转常数。ν₅带主要是A类型，带中心在1177.09378±0.00002厘米⁻¹处。发现ν₅受到附近2ν₇的轻微扰动。识别出约90条受扰动的跃迁。版权所有1998年学术出版社。