【摘要】 在相对论有效原子实势(RECP)近似下,用密度泛函中的B3LYP/LANL2DZ方法,对纯Pbn(n=2~9)团簇的各种可能几何构型进行全优化计算,得到它们的基态结构和电子特性;分析了其形成规律;并计算了团簇的能级分布和最高占据轨道(HOMO)与最低空轨道(LUMO)之间的能级间隙(HLG),分析了团簇的化学活性.更多还原

【Abstract】 The possible geometrical and electronic structures of Pbn(n=2~9) clusters have been optimized by Density functional theory(B3LYP/LANL2DZ) method with Relativistic effective core potential(RECP) using Gaussian 98 code.The shaping trend of small Pb clusters is analyzed on structures.Finally,the energy level distribution,HOMO-LUMO gaps and the chemical activation are investigated.更多还原