Programs for the evaluation of nuclear attraction integrals with B functions
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Abstract
The evaluation of nuclear attraction integrals with certain exponential-type orbitals (ETO's), the B functions [E. Filter and E.O. Steinborn, Phys. Rev. A 18 (1978) 1] has been programmed. The programs are based on a number of relatively compact general formulas for molecular integrals with B functions. These formulas can be derived using the Fourier transform method. B functions are particularly well suited for this method because they possess a very simple Fourier transform. Other ETO's lik...
Title of program: D_INT
Catalogue Id: ACNV_v1_0
Nature of problem
Nuclear attraction integrals have to be computed in ab initio quantum chemical LCAO and one-centre calculations. It is advantageous to use a basis set of B functions [2] because these functions are exponential- type orbitals (ETO's) and, hence, allow to describe correctly the nuclear cusps and the large-distance behaviour of the wavefunctions. This entails that relatively small ETO basis sets are required as compared to Gaussian basis sets. Also, for molecular integrals with B functions relative ...
Versions of this program held in the CPC repository in Mendeley Data
ACNV_v1_0; D_INT; 10.1016/0010-4655(93)90042-B
This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)
摘要
针对特定指数型轨道(ETO)计算核吸引力积分的评估程序已编制。该程序基于一系列相对紧凑的分子积分通用公式,这些公式采用傅里叶变换法推导而成。B函数特别适用于此方法,因为它们具有非常简单的傅里叶变换。与其他ETO相比,B函数能够更精确地描述核尖峰和波函数的长距离行为,因此相对于高斯基组,所需的小型ETO基组更为合适。此外,在涉及B函数的分子积分中……
程序名称:D_INT
目录编号:ACNV_v1_0
问题性质
在自洽场量子化学LCAO和单中心计算中,必须计算核吸引力积分。使用B函数基组([2])是有利的,因为这些函数是指数型轨道(ETO),因此能够正确描述核尖峰和波函数的长距离行为。这意味着相对于高斯基组,所需的小型ETO基组更为合适。此外,对于涉及B函数的分子积分……
Mendeley数据中CPC存储库中持有的该程序版本
ACNV_v1_0; D_INT; 10.1016/0010-4655(93)90042-B
该程序已从贝尔法斯特女王大学(1969-2019)的CPC程序库中导入。
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