Molecular integrals evaluated over contracted Gaussian functions by using auxiliary contracted hyper-Gaussian functions
Molecular integrals evaluated over contracted Gaussian functions by using auxiliary contracted hyper-Gaussian functions
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使用辅助收缩超高斯函数在收缩高斯函数上评估分子积分
DOI:
10.1063/1.1485958
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发表时间:
2002
影响因子:
4.4
通讯作者:
S. Obara
中科院分区:
文献类型:
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作者:
H. Honda;Takayoshi Yamaki;S. Obara
General recurrence formulas for evaluating molecular integrals over contracted Cartesian Gaussian functions are derived by introducing auxiliary contracted hyper-Gaussian (ACH) functions. By using a contracted Gaussian function, this ACH represents an extension of the Gaussian function named derivative of Fourier-kernel multiplied Gaussian [J. Chem. Phys. 94, 3790 (1991)]. The ACH is reducible to contracted Cartesian Gaussian functions, contracted modified Hermite Gaussian functions, and to contracted Gaussian functions multiplied by phase factors, or the so-called GIAO, and is also reducible to various spatial operators necessary for ab initio molecular orbital calculations. In our formulation, all molecular integrals are expressed in terms of ACH. Therefore, the formulations have wide applicability for calculating various kinds of molecular integrals in ab initio calculations. Recursive calculations based on our formulation do not depend on the number of contraction terms, because the contraction step i...
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