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采用密度泛函理论(DFT)的B3LYP方法,在6-311G**水平上对AlnO2(n=1~10)团簇的几何和电子结构进行了理论计算.讨论了混合团簇的基态结构与振动频率,以及电荷转移与成键特征.结果表明,富氧的AlO2基态结构是以Al原子为核心的线状结构,双聚体和富铝的AlnO2基态结构是以2个O原子为中心的AlmO(m〈n)分子碎片通过Al原子或Al簇相互结合形成的面状或立体结构.通过对基态结构的能量分析,得到了AlnO2团簇的稳定性信息.“,”The geometric configurations and electronic structures of the AlnO2(n=1~10) clusters were studied using the B3LYP(DFT) method at 6-311G** level.The ground state structure,vibrational fre-quency,charge transfer and bonding characteristic of the doped cluster are discussed in detail.The results show that the ground state of AlO2 is a linear structure with a center aluminum atom,while other AlnO2(n= 2~10) were the combination of two smaller one-center-oxygen-atom AlmO(mn) fragments shared with one Al atom or Al cluster.The stability information of AlnO2 clusters has been obtained by analyzing the en-ergy of the ground state structures.