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首页> 外文期刊>Journal of theoretical & computational chemistry >Theoretical investigation on the structure and properties of alumazine?m complexes (M = Li~+, Na~+, K~+, Be~(2+), Mg~(2+), and Ca~(2+))
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Theoretical investigation on the structure and properties of alumazine?m complexes (M = Li~+, Na~+, K~+, Be~(2+), Mg~(2+), and Ca~(2+))

机译:铝嗪?配合物的结构和性质的理论研究(M = Li〜+,Na〜+,K〜+,Be〜(2 +),Mg〜(2+)和Ca〜(2+))

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摘要

The nature of alumazine?M (M = Li~+, Na~+, K~+, Be~(2+), Mg~(2+), AND Ca~(2+)) interactions was studied by ab initio calculations. The interaction energies were calculated at MP2/6-311++G(d,p)//B3LYP/6-311++G(d,p) level. The calculations suggest that the size and charge of cation are two important factors that affect the interaction energy, charge transfer values and the variation in aromaticity of alumazine ring upon complexation. The theory of atoms in molecules (AIM) and natural bond orbital (NBO) analyses of complexes indicate that the variation of densities and the extent of charge shifts upon complexation correlate well with the obtained interaction energies. Finally, nucleus independent chemical shift (NICS) method was applied for evaluating the variation in aromaticity of alumazine ring upon complexation.
机译:通过从头算计算研究了铝嗪?M(M = Li〜+,Na〜+,K〜+,Be〜(2 +),Mg〜(2+)和Ca〜(2+))相互作用的性质。 。相互作用能以MP2 / 6-311 ++ G(d,p)// B3LYP / 6-311 ++ G(d,p)水平计算。计算结果表明,阳离子的大小和电荷是影响相互作用能,电荷转移值以及络合时铝嗪环芳香度变化的两个重要因素。分子中的原子理论(AIM)和复合物的自然键轨道(NBO)分析表明,复合物的密度变化和电荷转移的程度与所获得的相互作用能密切相关。最后,采用核独立化学位移(NICS)方法评估络合后铝嗪环芳香性的变化。

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