Molecular potential energy surfaces by interpolation in Cartesian coordinates

被引：85

作者：

Thompson, KC ^{[1
]}

Jordan, MJT ^{[1
]}

Collins, MA ^{[1
]}

机构：

[1] Australian Natl Univ, Res Sch Chem, Canberra, ACT 0200, Australia

来源：

JOURNAL OF CHEMICAL PHYSICS | 1998年 / 108卷 / 02期

关键词：

D O I：

10.1063/1.475419

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：

We present a new method for expressing a molecular potential energy surface (PES) as an interpolation of local Taylor expansions. By using only Cartesian coordinates for the atomic positions, this method avoids redundancy problems associated with the use of internal coordinates. The correct translation, rotation, inversion, and permutation invariance are incorporated in the PES via the interpolation method itself. The method is most readily employed for bound molecules or clusters and is demonstrated by application to the vibrational motion of acetylene. (C) 1998 American Institute of Physics.

引用

页码：564 / 578

页数：15

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