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Quantum Chemical Microsolvation by Automated Water Placement

机译:Quantum Chemical Summent的微调

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摘要

We developed a quantitative approach to quantum chemical microsolvation. Key in our methodology is the automatic placement of individual solvent molecules based on the free energy solvation thermodynamics derived from molecular dynamics (MD) simulations and grid inhomogeneous solvation theory (GIST). This protocol enabled us to rigorously define the number, position, and orientation of individual solvent molecules and to determine their interaction with the solute based on physical quantities. The generated solute–solvent clusters served as an input for subsequent quantum chemical investigations. We showcased the applicability, scope, and limitations of this computational approach for a number of small molecules, including urea, 2-aminobenzothiazole, (+)-syn-benzotriborneol, benzoic acid, and helicene. Our results show excellent agreement with the available ab initio molecular dynamics data and experimental results.
机译:我们开发了量子化学微透液的定量方法。我们的方法中的键是基于来自分子动力学(MD)模拟和网格不均匀溶剂化理论(GIST)的自由能溶剂热力学来自动放置各种溶剂分子。该协议使我们能够严格地定义各种溶剂分子的数量,位置和取向,并基于物理量确定它们与溶质的相互作用。产生的溶质溶剂簇用作随后的量子化学研究的输入。我们展示了许多小分子的适用性,范围和局限性,包括尿素,2-氨基苯甲酸噻唑,(+) - Syn-Benzotriborneol,苯甲酸和甲丙烯。我们的结果表明,与可用的AB Initio分子动力学数据和实验结果表现出非常一致的协议。

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