Evaluation of two-electron integrals including the factors r12k exp(-γr122) over Cartesian Gaussian functions

被引:12
作者
Weber, V [1 ]
Daul, C
机构
[1] Los Alamos Natl Lab, Theoret Div T12, Los Alamos, NM 87545 USA
[2] Univ Fribourg, Dept Chem, CH-1700 Fribourg, Switzerland
关键词
two-electron integrals; damped-R-12; integrals; HGP recurrence relations;
D O I
10.1016/S0010-4655(03)00497-1
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
We present a practical scheme for the evaluation of nonstandard two-electron integrals including the factors r(12)(k) exp(-gammar(12)(2)) which have been appeared recently, where k greater than or equal to -1 is an integer. The method used throughout this paper is based on the highly efficient Head-Gordon and Pople (HGP) approach of evaluation of electron repulsion integrals (ERI). Thus only straightforward modifications of existing codes that employ HGP or HGP-PRISM scheme are necessary to implement our approach. (C) 2003 Elsevier B.V All rights reserved.
引用
收藏
页码:1 / 11
页数:11
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