Method Development on Valence Bond Theory and Its Applications

Abstract

传统的价键理论方法较少涉及到溶液体系的理论研究及其应用,本文试图发展考虑溶剂效应的价键理论方法并将其进一步扩展到非平衡溶剂化的研究领域。另外,考虑到价键方法的研究领域仍然有限,本论文力图拓展从头算价键方法的应用研究范围。本工作主要包括以下三个方面:1.考虑溶剂效应的从头算价键方法的发展及其程序的编写第三章介绍本课题组最新发展的从头算溶剂化价键方法——VBSM方法。基本理论思路为:通过价键密度矩阵求得原子净电荷,运用Generalized-Born方程求得当前波函数下的极化溶剂化自由能。经过价键自恰场迭代,波函数和能量同时得到优化。VBSM的优点在于它不仅能够计算体系的溶剂化自由能而且能够得到该...In this paper, new Valence Bond (VB) methods for solvent effects are developed. Sequentially ab initio VB methods are applied to several chemical reactions and small molecules. There are three sections in it. 1. Development on VB methods Chapter 3 presents a VB method, called VBSM, to study free energies of solvation by VB methods. The VB calculation takes the polarization free energies which co...学位:理学博士院系专业:化学化工学院化学系_物理化学(含化学物理)学号:B20032503

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