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Understanding the Woodward-Hoffmann Rules by Using Changes in Electron Density

机译:通过使用电子密度的变化了解伍德沃德-霍夫曼规则

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The Woodward-Hoffmann rules for pericyclic reactions are explained entirely in terms of directly observable physical properties of molecules (specifically changes in electron density) without any recourse to model-dependent concepts, such as or-bitals and aromaticity. This results in a fundamental explanation of how the physics of molecular interactions gives rise to the chemistry of pericyclic reactions. This construction removes one of the key outstanding problems in the qualitative density-functional theory of chemical reactivity (the so-called conceptual DFT). One innovation in this paper is that the link between molecular-orbital theory and conceptual DFT is treated very explicitly, revealing how molecular-orbital theory can be used to provide "back-of-the-envelope" approximations to the reactivity indicators of conceptual DFT.
机译:关于环周反应的Woodward-Hoffmann规则完全根据可直接观察到的分子物理性质(特别是电子密度的变化)来解释,而无需依赖于模型相关的概念,例如轨道和芳香性。这从根本上解释了分子相互作用的物理过程如何引起周环反应的化学反应。这种构造消除了化学反应的定性密度泛函理论(所谓的概念性DFT)中的关键突出问题之一。本文的一项创新是非常明确地对待了分子轨道理论与概念性DFT之间的联系,这揭示了分子轨道理论如何可用于为概念性DFT的反应性指标提供“后包络”近似。

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