物理化学学报 >> 2006, Vol. 22 >> Issue (02): 178-182.doi: 10.3866/PKU.WHXB20060210

研究论文 上一篇    下一篇

AlmN2 (m=1~8)团簇的结构与稳定性

马文瑾; 武海顺   

  1. 山西师范大学化学与材料科学学院, 山西 临汾 041004
  • 收稿日期:2005-07-13 修回日期:2005-09-29 发布日期:2006-01-22
  • 通讯作者: 武海顺 E-mail:cailiao@dns.sxtu.edu.cn

Structure and Stability of AlmN2 (m=1~8) Clusters

MA Wen-jin; WU Hai-shun   

  1. School of Chemistry and Material Science, Shanxi Normal University, Shanxi Linfen 041004, P. R. China
  • Received:2005-07-13 Revised:2005-09-29 Published:2006-01-22
  • Contact: WU Hai-shun E-mail:cailiao@dns.sxtu.edu.cn

摘要: 用密度泛函理论(DFT)的B3LYP方法, 在6-311G*水平上对AlmN2- (m =1~8)团簇的几何构型、电子结构、振动频率、电荷分布与成键方式进行了理论研究. 结果表明, AlmN2- 团簇的基态结构有两种基本构型, 一种是以N—N键为核心, 周围与Al原子配位形成的; 另一种是由两个AlnN(n<m)分子碎片通过共用Al原子或Al—Al键相互结合形成的. 对AlnN分子碎片相互结合形成的基态结构亲和能讨论得到, m为奇数的AlmN2-团簇比m为偶数的稳定.

关键词: AlmN2-团簇, 密度泛函理论, 基态结构, 稳定性

Abstract: The geometric configurations, electronic structures, vibrational frequencies, and atomic charge of the AlmN2- (m=1~8) clusters were studied using the B3LYP (DFT) method at 6-311G* level. The results show that there exist two types of bonding character in the ground state of AlmN2- clusters. One is formed through N—N bonds and aluminum atom, the other is combined with AlnN(n

Key words: AlmN2- clusters, Density functional theory, Ground state structure, Stability