Ab initio potential energy surfaces for the study of rotationally inelastic CH(X2Π)+H(2S) collisions

被引:8
|
作者
Ben Abdallah, D. [1 ]
Najar, F. [1 ]
Jaidane, N. [1 ]
Ben Lakhdar, Z. [1 ]
Honvault, P. [2 ]
机构
[1] Univ Tunis El Manor, Fac Sci, Dept Phys, Lab Phys Atom & Mol & Applicat, Tunis 1060, Tunisia
[2] Univ Franche Comte, Inst UTINAM, UMR CNRS 6213, F-25030 Besancon, France
关键词
D O I
10.1016/j.cplett.2008.03.005
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 four potential energy surfaces (PESs) associated, respectively to (1)A', (3)A', (1)A '' and (3)A '' states correlating to the interacting CH(X2 Pi) + Hd(S-2) system, were determined using the aug-cc-pVQZ basis set, and multireference internally contracted configuration-interaction (MRCI) calculation method including the Davidson correction. The CH bond length was fixed at the equilibrium value of the X-2 Pi ground state. The PES of the A' state considerably differs from that of the A '' state. The ab initio calculated interaction energies of the A' and A '' PESs for each spin multiplicity were fitted analytically on the basis of Legendre polynomials. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码:7 / 12
页数:6
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