NONADDITIVE INTERMOLECULAR FORCES FROM THE SPECTROSCOPY OF VAN-DER-WAALS TRIMERS - FAR-INFRARED SPECTRA AND CALCULATIONS ON AR2-DCL

被引：49

作者：

ELROD, MJ ^{[1
]}

SAYKALLY, RJ ^{[1
]}

COOPER, AR ^{[1
]}

HUTSON, JM ^{[1
]}

机构：

[1] UNIV DURHAM,DEPT CHEM,DURHAM DH1 3LE,ENGLAND

来源：

MOLECULAR PHYSICS | 1994年 / 81卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1080/00268979400100391

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 far-infrared vibration-rotation spectrum of the out-of-plane DCl bending band of Ar2-DCl is observed around 36.0 cm-1. The experimental bending frequency, rotational constants and hyperfine coupling constants are compared with the results of calculations employing both pairwise-additive and non-additive interaction potentials. As found previously for Ar2-HCl, there are substantial discrepancies between the experimental results and calculations employing a pairwise-additive potential. To explain the discrepancy it is necessary to include a non-additive term that arises from the interaction of the permanent multipoles of the DCl monomer with an overlap-induced quadrupole on Ar2. The new spectra should prove very valuable in a future determination of the non-additive contribution to the potential.

引用

页码：579 / 598

页数：20

共 29 条

[1] Interaction of the van der Waals type between three atoms [J].