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arXiv 2203.08640physics.chem-ph
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不确定性对分子结构单元的影响

The effect of uncertainty on building blocks in molecules

Anthony Scemama, Andreas Savin

摘要:

对于高度相关的波函数,计算了在灵活的空间域中找到选定数目的电子的概率。量子力学可以在这些区域中产生更高的电子化学相关排列的概率。然而,具有给定布置的概率,例如,对应于化学式(键或原子)的,虽然通常是最大的,但很低。像价键理论一样,考虑电子的不同分布是有用的。电子的交换不仅应该考虑原子之间,而且应该考虑其他类型的区域之间,比如那些归因于孤对的区域。有足够灵活的定义是有用的,允许用户找到他认为最相关的参考表示。我们暂时建议一个工具(有效的政党数量)来帮助人们做出选择。

英文摘要:

Probabilities to find a chosen number of electrons in flexible domains of space are calculated for highly correlated wave functions. Quantum mechanics can produce higher probabilities for chemically relevant arrangements of electrons in these regions. However, the probability to have a given arrangement, e.g., that corresponding to chemical formulas (bonds or atoms), is low although being often maximal. Like in valence bond theory, it is useful to consider alternative distributions of the electrons. Exchanges of electrons should be considered not only between atoms, but also between other types of regions, like those attributed to lone pairs. It is useful to have definitions flexible enough to allow the user to find the reference representations he considers most relevant. We tentatively suggest a tool (the effective number of parties) to help one make the choice.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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