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Charge Transfer in Partition Theory

机译:分配理论中的电荷转移

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摘要

The recently proposed partition theory (PT) (J. Phys. Chem. A 2007, 111, 2229.) is illustrated on a simple one-dimensional model of a heteronuclear diatomic molecule, 1DAB. It is shown that a sharp definition for the charge of molecular fragments emerges from PT and that the ensuing population analysis can be used to study how charge redistributes during dissociation and the implications of that redistribution for the dipole moment. Interpreting small differences between the isolated parts' ionization potentials as due to environmental inhomogeneities, we gain insight into how electron localization takes place in H_2~+ as the molecule dissociates. Furthermore, by studying the preservation of the shapes of the parts as different parameters of the model are varied, we address the issue of transferability of the parts. We find good transferability within the chemically meaningful parameter regime, raising hopes that PT will prove useful in chemical applications.
机译:最近提出的分配理论(PT)(J. Phys。Chem。A 2007,111,2229.)在异核双原子分子1DAB的简单一维模型中得到了说明。结果表明,从PT中可以清晰地定义分子碎片的电荷,随后的总体分析可用于研究解离过程中电荷如何重新分布以及这种重新分布对偶极矩的影响。解释由于环境不均匀性导致的孤立部分的电离电势之间的微小差异,我们了解了分子解离后电子在H_2〜+中如何发生定位。此外,通过研究模型的不同参数变化时零件形状的保存性,我们解决了零件的可转移性问题。我们在化学意义上的参数范围内发现了良好的可转移性,从而使人们希望PT在化学应用中会很有用。

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