Ab initio potential energy surface and bound states of the Xe-HF complex

被引:7
|
作者
Zhang, Chunzao [1 ]
Wang, Zhongquan [1 ]
Yu, Haijun [1 ]
Du, Jianming [1 ]
Ma, Jianguo [1 ]
机构
[1] Huainan Normal Univ, Dept Phys, Huainan 232001, Peoples R China
关键词
CONSISTENT BASIS-SETS; CONVERGENT BASIS-SETS; DER-WAALS COMPLEX; RELATIVISTIC PSEUDOPOTENTIALS; ROTATIONAL PREDISSOCIATION; INTERMOLECULAR POTENTIALS; COUPLED-CLUSTER; NE; AR;
D O I
10.1016/j.cplett.2010.06.066
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 two-dimensional potential energy surface for the Xe-HF van der Waals interaction is calculated by the single and double excitation coupled-cluster theory with noniterative treatment of triple excitations [CCSD(T)]. Mixed basis sets, aug-cc-pVQZ for the H and F atom and aug-cc-pVQZ-PP for the Xe atom, with an additional (3s3p2d2f1g) set of midbond functions are used. There are two minima on the potential. The global minimum at R(e) = 7.05a(0) and theta(e) = 180 degrees with well depth -309.2906 cm(-1). The shallower minimum is located at R = 7.00a(0) and theta = 0 degrees. Based on the potential, the predicted transition frequencies are in good agreement with the experimental results. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码:166 / 169
页数:4
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