首页|团簇NiPS3异构转化热力学与动力学分析

团簇NiPS3异构转化热力学与动力学分析

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为了探究团簇NiPS3 的稳定性和异构转化机理,本文利用密度泛函理论,在B3LYP/def2-tzvp的量化水平下,对团簇NiPS3的初始构型进行优化分析和异构化计算,得到了10 种优化构型和7 种异构转化类型.从化学反应的热力学和动力学对异构转化反应进行讨论分析,得出了以下结论:团簇NiPS3 的异构转化反应依赖于非金属-金属和非金属-非金属之间的成键与断键;反应物与产物稳定性差别越大,反应进行的越彻底;除反应2(2)→1(4)外,其他的异构化反应在低温下更加易于自发进行;异构化反应趋向于正向进行,即能量高的构型向能量低的构型转换更容易;构型 1(2)、构型 2(2)和构型 1(4)是团簇NiPS3 异构转化的最终产物,进行相关材料的研究、开发和生产时,可优先考虑.
Thermodynamic and kinetic analysis of cluster NiPS3 isomerization
In order to explore the stability of cluster NiPS3 and the mechanism of isomerization transformation,in this paper,density functional theory was used to optimize the initial configuration of cluster NiPS3 and calculate the isomerization under the quantum chemistry calculation level of B3LYP/def2-tzvp.Ten optimal configura-tions and seven isomerization transformation types were obtained.Based on the thermodynamics and kinetics of chemical reactions,the following conclusions are drawn:the isomerization transformation of cluster NiPS3 de-pends on the bonding and bonded breaking between non-metal and non-metal.The greater the difference be-tween the stability of reactants and products,the more thorough the reaction.Except reaction 2(2)→1(4),other i-somerization reactions are more spontaneous at low temperature.The isomerization reaction tends to proceed in the forward direction,that is to say,the higher energy configuration is easier to convert to the lower energy configura-tion.Configurational 1(2),configurational 2(2)and configurational 1(4)are the final products of cluster NiPS3 isom-erization,and could be given priority in the research,development and production of related materials.

Cluster NiPS3Density functional theoryIsomerization conversionTransition-state theoryVan't Hoff equation

宋静丽、方志刚、刘立娥、魏代霞、原琳

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辽宁科技大学 化学工程学院,鞍山 114051

团簇NiPS3 密度泛函理论 异构转化 过渡态理论 范特霍夫方程

国家自然科学基金重点项目国家级大学生创新创业训练计划国家级大学生创新创业训练计划国家级大学生创新创业训练计划辽宁省大学生创新创业训练计划项目辽宁省大学生创新创业训练计划项目辽宁省大学生创新创业训练计划项目辽宁省大学生创新创业训练计划项目辽宁省大学生创新创业训练计划项目辽宁省大学生创新创业训练计划项目

5163400420211014602720201014600202010146016202110146049202110146052202110146030202110146055202110146040202110146056

2024

原子与分子物理学报
四川大学,四川省物理学会,中国物理学会原子与分子物理专业委员会

原子与分子物理学报

北大核心
影响因子:0.296
ISSN:1000-0364
年,卷(期):2024.41(4)
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