DIODE-LASER SPECTROSCOPY AND COUPLED ANALYSIS OF THE NU(2) AND NU(4) FUNDAMENTAL BANDS OF SIH3+

被引：19

作者：

DAVIES, PB

SMITH, DM

机构：

[1] Department of Chemistry, University of Cambridge, Cambridge, CB2 IEW, Lensfield Road

[2] School of Chemistry, University of Birmingham, Edgbaston, Birmingham

来源：

JOURNAL OF CHEMICAL PHYSICS | 1994年 / 100卷 / 09期

关键词：

D O I：

10.1063/1.467081

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The gas phase infrared spectra of the v(2) and v(4) fundamentals of SiH3+ have been measured between 730 and 1015 cm(-1). The ion was produced in an ac glow discharge in silane and hydrogen mixtures. Vibration-rotation transitions were detected using diode laser velocity modulation spectroscopy. 112 transitions were included in a combined fit of both bands which yielded B-0=5.214 51(27) and C-0-2.585 20(38) cm(-1). The v(2) [838.0669(24) cm(-1)] and v(4)[938.3969(36) cm(-1)] bands are coupled by a Coriolis x,y resonance for which xi(24) = -3.8339(22) based on a calculated value of xi(4)=-0.05127, Experimental band origins and rotational and quartic distortion parameters are compared with recent ab initio calculations.

引用

页码：6166 / 6174

页数：9

共 23 条

[1] NONCLASSICAL DOUBLE-BRIDGED STRUCTURE IN SILICON-CONTAINING MOLECULES - EXPERIMENTAL-EVIDENCE IN SI2H2 FROM ITS SUBMILLIMETER-WAVE SPECTRUM [J].