摘要
本文利用密度泛函理论(DFT)对GanP-(n=2-7)和GanP2-(n=1-6)阴离子团簇的几何结构、电子态及稳定性进行了研究.在B3LYP/6-31G*水平上进行了结构优化和频率分析,得到了GanP-(n=2-7)和GanP2-(n=1-6)团簇的基态结构.这些阴离子团簇的几何结构随着n的增大,在n=5时由平面结构转化为立体结构;在GanP2-(n=1-6)团簇中,P-P比Ga-P容易成键;在GanP-(n=2-7)和GanP2-(n=1-6)阴离子团簇中,Ga3P2-,Ga4P2-,Ga5P2-和Ga6P-的基态结构最稳定.
The density functional theory (DFT) is carried out on the low lying geometric structure, electronic state and energy of GanP^- ( n = 2-7) and GanP2^- ( n = 1-6) anionic clusters. Structural optimization and frequency analysis are performed at the level B3LYP/6-31 + G^*. The ground state of GanP^- ( n = 2-7) and GanP2^- ( n = 1-6) anion clusters are found. With increasing cluster size we find transitions from planar to non- planar structures at n = 5. The strong P-P bond is favored over P-Ga in GanP2^- ( n = 1-6) anionic clusters. Among different GanP-( n =2-7) and Ga.P2-( n = 1-6) clusters, Ga3P2^-, Ga4P2^-, GasP2^- and Ga6P^- are more stable.
出处
《原子与分子物理学报》
CAS
CSCD
北大核心
2006年第2期279-286,共8页
Journal of Atomic and Molecular Physics
基金
陕西省科技攻关项目(2005k06-G25)
作者简介
李恩玲(1965~)。女。陕西武功人,副教授,在读博士生。主要从事微电集成与光电材料方面的研究.通讯作者:E-mail:lienling@xaut.edu.cn