An analysis of valence electronic structure from a viewpoint of resonance theory: Tautomerization of formamide and diazadiboretidine

An analysis of valence electronic structure from a viewpoint of resonance theory: Tautomerization of formamide and diazadiboretidine
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从共振理论角度分析价电子结构:甲酰胺与二氮杂二硼烷的互变异构

DOI:
10.1002/jcc.26703
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发表时间:
2021
影响因子:
3
通讯作者:
Sato Hirofumi
Sato Hirofumi
中科院分区:
化学3区
文献类型:
--
作者:
Nakatani Kaho;Higashi Masahiro;Fukuda Ryoichi;Sato Hirofumi

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共振理论对于理解价电子结构仍然非常有用。然而,这种观点通常不能通过通用的量子化学计算来获得,而是需要相当特殊的处理,例如价键方法。在本研究中,我们提出了一种基于二次量子化的方法,从电子结构的局域角度分析通用量子化学计算得到的结果,并分析二氮杂二硼烷和甲酰胺的互变异构。该方法仅需要“PS”矩阵,由密度矩阵(P 矩阵)和重叠矩阵组成,并且可以使用与 Mulliken 总体分析相当的负载进行计算。该方法的一个关键特征是,与迄今为止提出的其他方法不同,它直接利用通用量子化学计算的结果。
The resonance theory is still very useful in understanding the valence electron structure. However, such a viewpoint is not usually obtained by general‐purpose quantum chemical calculations, instead requires rather special treatment such as valence bond methods. In this study, we propose a method based on second quantization to analyze the results obtained by general‐purpose quantum chemical calculations from the local point of view of electronic structure and analyze diazadiboretidine and the tautomerization of formamide. This method requires only the “PS”‐matrix, consisting of the density matrix (P‐matrix) and overlap matrix, and can be computed with a comparable load to that of Mulliken population analysis. A key feature of the method is that, unlike other methods proposed so far, it makes direct use of the results of general‐purpose quantum chemical calculations.
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