Quantum theory of atoms in molecules in condensed charge density space

Quantum theory of atoms in molecules in condensed charge density space
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凝聚电荷密度空间分子中原子的量子理论

DOI:
10.1139/cjc-2019-0086
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发表时间:
2019
影响因子:
1.1
通讯作者:
Eberhart, M.E.
Eberhart, M.E.
中科院分区:
化学4区
文献类型:
--
作者:
Wilson, Timothy R.;Eberhart, M.E.

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通过利用分子中原子的量子理论的基本原理--将电子电荷密度(ρ)划分到由零通量表面限定的区域--我们将ρ的梯度场映射到称为梯度束凝聚电荷密度()的二维空间。的拓扑 似乎与ρ中化学意义的区域相关。键楔被定义为吸引盆在ρ中的图像, ,类似于巴德原子,它是ρ中的吸引盆。键束被定义为共享原子间表面的键楔的联合。我们表明,最大值在 通常映射到ρ中的键路径,尽管这不一定总是正确的。这一观察解决了许多关于键临界点和键路径在分子中原子的量子理论中的化学意义的问题。
By leveraging the fundamental doctrine of the quantum theory of atoms in molecules — the partitioning of the electron charge density (ρ) into regions bounded by surfaces of zero flux — we map the gradient field ofρonto a two-dimensional space called the gradient bundle condensed charge density ( ). The topology of appears to correlate with regions of chemical significance inρ. The bond wedge is defined as the image inρof the basin of attraction in , analogous to the Bader atom, which is the basin of attraction inρ. A bond bundle is defined as the union of bond wedges that share interatomic surfaces. We show that maxima in typically map to bond paths inρ, though this is not necessarily always true. This observation addresses many of the concerns regarding the chemical significance of bond critical points and bond paths in the quantum theory of atoms in molecules.
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