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用从头算方法研究类硼烯HBLiF和类铝烯HAILiF的几何构型。它们均有四种平衡构型,分别为型(1)、型(2)、四元环型(3)和三元环型(4)。结果表明,在6-31G和6-31G水平上,类硼烯的能量降低顺序为(1)>(3)>(4)>(2);而类铝烯的能量则以(1)>(2)>(4)>(3)顺序降低。分析各构型的特点,从Mulliken集居数和分子间相互作用的角度讨论其稳定性,并与H2CLiF、H2SiLiF和HNLiF进行了比较。
The ab initio method was used to study the geometrical configurations of borane HBLiF and alloallene HAILiF. They all have four equilibrium configurations, namely type (1), type (2), quaternary ring type (3) and ternary ring type (4). The results show that the energetic decrease order of borane is (1)> (3)> (4)> (2) at 6-31G and 6-31G levels; (2)> (4)> (3) The order is reduced. The characteristics of each configuration were analyzed. The stability of Mulliken population was discussed from the perspective of Mulliken population and intermolecular interactions, and compared with H2CLiF, H2SiLiF and HNLiF.