SiCl⁺（X¹Σ⁺）高达v = 6的红外激光速度调制光谱学

Infrared Laser Velocity Modulation Spectroscopy of SiCl+(X1Sigma+) up to v = 6.

作者信息

Fan WY, Liu Z, Davies PB

机构信息

Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, United Kingdom

出版信息

J Mol Spectrosc. 1998 Sep;191(1):98-107. doi: 10.1006/jmsp.1998.7610.

DOI:10.1006/jmsp.1998.7610

PMID:9724585

Abstract

Many fundamental and hot band absorption lines of 28Si35Cl+, 28Si37Cl+, 29Si35Cl+, and 30Si35Cl+ have been detectedbetween 630 and 700 cm-1 in a SiCl4/He discharge using diode laser velocity modulation spectroscopy. The datahave been fitted to give seven mass independent coefficients Ukl. The derived spectroscopic constants for 28Si35Cl+ include omegae = 678.24316(18) cm-1 and Be = 0.2870288(14) cm-1. The equilibrium internuclear distance is re =1.9439105(46) Å. The equilibrium dissociation energy calculated from Dunham's expanded Morse potential is De =49 431(57) cm-1. Copyright 1998 Academic Press.

摘要

利用二极管激光速度调制光谱法，在SiCl4/He放电中已检测到28Si35Cl+、28Si37Cl+、29Si35Cl+和30Si35Cl+在630至700 cm-1之间的许多基频吸收线和热谱带吸收线。数据经拟合得到七个与质量无关的系数Ukl。推导得到的28Si35Cl+光谱常数包括ωe = 678.24316(18) cm-1和Be = 0.2870288(14) cm-1。平衡核间距为re = 1.9439105(46) Å。根据邓纳姆展开的莫尔斯势计算出的平衡解离能为De = 49431(57) cm-1。版权所有1998年学术出版社。