First principles study of the structure, electronic state and stability of AlnAs+m cations

被引:1
作者
Guo, L [1 ]
Wu, HS [1 ]
机构
[1] Shanxi Normal Univ, Sch Chem & Mat Sci, Linfen 041004, Peoples R China
来源
JOURNAL OF MOLECULAR STRUCTURE-THEOCHEM | 2006年 / 760卷 / 1-3期
关键词
AlnAsm++ cluster; density functional theory; stability;
D O I
10.1016/j.theochem.2005.10.060
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Structural and electronic properties of semiconductor binary microclusters AlnAsm+ cations have been investigated using the B3LYP-DFT method in the ranges of n = 1, 2 and in = 1-7. Full structural optimization, adiabatic ionization potentials calculation and frequency analysis are performed with the basis of 6-311 + G(d). The charged-induced structural changes in these cations have been discussed. The strong As-As bond is also favored over Al-As bonds in the AlnAsm+ cations in comparison with corresponding neutral cluster. With As forming the base, adding Al atom(s) in different positions would find the stable structures of AlnAsm+ cations quickly and correctly. AlAs2+, AlAs4+, and AlAs6+ are predicted to be species with high stabilities and possible to be produced experimentally. (c) 2006 Elsevier B.V. All rights reserved.
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页码:167 / 173
页数:7
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