高等学校化学学报 ›› 1985, Vol. 6 ›› Issue (4): 363.

• 研究简报 • 上一篇    下一篇

一种选择共价晶体原子簇模型边界条件的新方法

关大任1, 韩应建2, 邓从豪1   

  1. 1. 山东大学化学系;
    2. 兰州大学化学系
  • 收稿日期:1983-10-21 出版日期:1985-04-24 发布日期:1985-04-24

A New Method of Choosing Boundary Condition on Cluster for Covalent Solid State Simulations

Guan Daren1, Han Yingjian2, Deng Conghao1   

  1. 1. Department of Chemistry, Shandong University, Jinan;
    2. Depertment of Chemistry, Lanzhou University, Lanzhou
  • Received:1983-10-21 Online:1985-04-24 Published:1985-04-24

摘要: 计算任何固体和表面的电子结构之前,必须构造一个物理模型,由于实际的结构模型是有限的,这就需要正确考虑边界条件的影响。迄今,已经提出了一些不同的边界处理方案。一种是用一个单价原子来饱和原子簇边界上的一个游离键,所用原子通常是氢原子或碱金属原子。更好的处理是引入改变了部分或全部量子化学参数的赝原子来构成边界,这种方法称为模拟边界条件。

Abstract: Anew method is proposed for determining boundary condition on model for covalentsolid state cluster simulations, based on the relaxation of the boundary atoms ofthe cluster. Calculations for this model by CNDO/2 method for an adsorption problemof water on the surface of silica gel, yields satisfactory results compared with thedata of the other.

TrendMD: