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Development of additive isotropic site potential for exchange-repulsion energy, based on intermolecular perturbation theory

机译:基于分子间扰动理论的交换排斥能量加性各向同性位势的发展

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摘要

We have developed an additive spherical site potential for exchange-repulsion energy by applying the local density approximation in Hilbert space, the local-site approximation, and the s-type auxiliary basis set to the equation derived from intermolecular perturbation theory. The method efficiently addresses the decomposition of molecular interactions derived from quantum chemistry into additive spherical site potentials, required as force field input in a statistical-mechanical, reference interaction site model (RISM and 3D-RISM), molecular theory of solvation. The present method reproduces the exchange-repulsion energy between simple molecules obtained from quantum chemical calculations.
机译:我们已经通过应用希尔伯特空间中的局部密度近似,局部位置近似和s型辅助基础(为分子间微扰理论推导的方程式设置),为交换排斥能量开发了加性球状位势。该方法有效地解决了从量子化学衍生的分子相互作用分解为加成球形位点电势的问题,这是在力学,参考相互作用位点模型(RISM和3D-RISM),溶剂化分子理论中作为力场输入所必需的。本方法再现了从量子化学计算获得的简单分子之间的交换排斥能。

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