甲基甲基烯化佩洛夫斯基特离子对及其二次体:,基和烯结合相互作用之间的相互作用
Pradeep R Varadwaj1,2, Arpita Varadwaj1, Helder M Marques2
1Department of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1, Tokyo 113-8656, Japan.
International journal of molecular sciences
|July 14, 2023
概括
甲基氨四合物氧化物矿通过非共价相互作用获得稳定性. 与和基键一起,四结合对于它们的结构和光电子特性至关重要.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 计算化学计算化学
背景情况:
- 有机-无机混合矿,特别是甲基四合物化物 (MATtX3),因其光电子特性而受到广泛研究.
- 这些材料的结构稳定性归因于有机离子和无机离子之间的非共价相互作用.
- 对稳定这些复杂结构的特定化学结合相互作用的基本理解仍然有限.
研究的目的:
- 用计算方法阐明甲基四合物化矿离子对中的非共价相互作用的性质.
- 确定负责这些离子对在气相和晶体状态中的稳定和几何配置的关键键结合相互作用.
- 了解四结合在无机框架形成中的作用及其对材料性质的影响.
主要方法:
- 密度函数理论 (DFT) 模拟使用离子对模型作为周期晶体系统的重复单位.
- 分析非共价相互作用,包括电荷辅助的N-H···X和C-H···X键,以及C-N···X基键.
- 在无机离子部分内对Tt···X烯结合相互作用的研究.
- 使用分子中的原子量子理论 (QTAIM),自然键轨道 (NBO) 分析,分子静电电位 (MEP) 和独立梯度模型验证发现.
主要成果:
- 非共价相互作用,包括键 (N-H··X,C-H··X) 和键 (C-N··X),稳定气相中的离子对.
- 确定了四结合 (Tt··X) 作为一个关键的相互作用,在晶体结构中将无机阴离子部分 (TtX3-) 保持在一起.
- 每个四原子 (Tt) 可以向邻近的TtX3-单元捐赠三个四键,形成一个共享角的TtX6八面体的3D网络.
- 这些相互连接的八面体创造了类似子的无机框架,它是有机的宿主,导致功能性矿材料的形成.
结论:
- 甲基胺四合金化物矿的结构完整性和稳定性是由,pnictogen和四结合相互作用的组合控制的.
- 环结合在构建无机框架方面发挥着至关重要的作用,对材料的整体结构和性能至关重要.
- 对这些结合相互作用的详细理解为光电子应用的矿材料的设计和优化提供了洞察力.
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