摘要
基于经验势,利用遗传算法研究了中性氧化镁(MgO)n团簇(n=2~20)的稳定结构.当n=3,6,9,12,15,18时,(MgO)n团簇具有幻数结构.对这些幻数结构的不同稳定异构体在Me2/6—31G水平上进行优化,并对稳定结构的特征及其随尺寸变化的规律进行了分析.同时,优化了带负电的(MgO)n^-(n≤6)团簇的结构,分析了额外负电子对团簇结构的影响.
The stable structures of neutral (MgO)n cluster (n = 2 - 20) are investigated using genetic algorithm based on empirical potential. Magic structures of (MgO)n cluster are n=3,6,9,12,15,18. The different stable isomers of (MgO)n magic clusters are optimized on MP2/6-31G level when n=6,9,12. For the most stable isomers (MgO)n clusters, the structural properties and their change with increasing clusters size are analyzed. The most stable structures (MgO)n (n≤6) clusters and (MgO)n^-(n≤6) clusters are optimized, and the effect of the excess electron on (MgO).(n≤6) structures is studied with MP2.
出处
《西北师范大学学报(自然科学版)》
CAS
2007年第4期55-59,共5页
Journal of Northwest Normal University(Natural Science)
基金
国家自然科学基金资助项目(10347007)