核电子轨道系统的隐式和显式极化解模型的评估:量子质子极化和解能量学
Eleftherios Lambros1, Benjamin Link1, Mathew Chow2
1Department of Chemistry, University of Washington, Seattle, Washington 98195, United States.
The journal of physical chemistry. A
|October 27, 2023
概括
核电子轨道极化连续模型 (NEO-PCM) 方法通过包括量子核效应和溶剂环境来准确模拟化学过程. 这种方法扩展到新的模型中,揭示了对核极化和溶解能量的洞察力.
科学领域:
- 计算化学的计算化学
- 量子力学就是量子力学.
- 化学物理 化学物理
背景情况:
- 模拟化学过程需要考虑核量子效应和溶剂相互作用.
- 核电子轨道 (NEO) 方法以量子力学方式对待原子核和电子.
- 极化连续模型 (PCM) 代表了溶剂环境.
研究的目的:
- 扩展NEO-PCM方法,包括表面和体积极化模拟用于静电学 (SS(V) PE) 和域分解导体样选模型 (ddCOSMO) 方法.
- 在不同的PCM形式上分析核极化和溶解能.
- 在连续和显式溶剂模型中研究质子极化.
主要方法:
- 使用SS(V) PE和ddCOSMO溶解模型实现NEO-PCM.
- 使用整方程形式主义PCM (IEF-PCM),导体PCM (C-PCM),SS(V) PE和ddCOSMO进行溶解能量和核极化比较.
- 在可极化MB-pol显式溶剂模型中分析量子化质子极化.
主要成果:
- 使用IEF-PCM,SS(V) PE,C-PCM和ddCOSMO进行NEO-PCM计算,可以获得类似的溶解能和核极化.
- 核密度在分子腔内保持局部化,防止泄漏.
- 显式溶解模型捕捉了影响质子极化的特定结相互作用,与连续模型不同.
结论:
- 扩展的NEO-PCM方法为模拟溶液中的量子核效应提供了一个计算上实用的方法.
- 不同的连续性溶解模型在核极化和能量学方面显示了可比的结果.
- 显式溶剂模型对于准确描述结等现象及其对量子化核的影响至关重要.
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