作为非共价键受体的银 (I):对ClAgL3复合体的理论研究 (L = etu,dmtu,ettu,pip)
Ruixue Li1, Yanli Zeng1, Xiaoyan Li1
1College of Chemistry and Materials Science, Hebei Key Laboratory of Inorganic Nano-Materials, Hebei Normal University, Shijiazhuang 050024, China.
The journal of physical chemistry. A
|November 29, 2025
概括
这项研究研究了银和铜化合物与电子捐赠配体的素结合. 这些金属复合物作为素键受体,相互作用范围从弱到部分共价,受静电和分散力的影响.
科学领域:
- 无机化学 无机化学
- 计算化学计算化学
- 超分子化学 超分子化学
背景情况:
- 具有特定连接体的金属复合物可以表现出独特的电子性质.
- 素结合是一种重要的非共价相互作用,在分子识别和材料科学中至关重要.
- 了解金属-连接体和金属-供体相互作用的性质是设计新型功能材料的关键.
研究的目的:
- 系统地研究ClAgL3和含Cu的化合物 (L = imidazolidine-2-thione, dimethylthiourea, N-ethylthiourea, piperidine) 的素结合相互作用.
- 探索连接体在调节金属中心的d(z^2) -核友性的作用,以接受素键.
- 分析含金属和含硫的素键与σ孔和π孔供体的性质 (封闭外与部分共价) 和贡献力 (静电,分散) .
主要方法:
- 使用计算化学方法进行系统的理论研究.
- 分析金属复合物 (ClAgL3,XCuL3) 和素键捐赠体 (I2,1,4-C6F4I2,C6F6,1,4-C6F4I2) 之间的相互作用.
- 键类型 (Ag·I,Cu·I,S·I,Ag-S·I) 的表征和相互作用能量的量化.
主要成果:
- 电子捐赠配体增强金属的d(z^2) -核友性,使素键的接受.
- 大多数Ag·I和 (Ag-S) ··I素键表现出弱,闭相互作用;Ag·I和Cu·I键表现出部分共价性.
- 协调硫原子形成部分共价S··I素键;金属复合物作为π孔捐赠者的四中心受体.
结论:
- 静电相互作用是复杂稳定的主要驱动因素,在某些相互作用中,分散力变得更加重要.
- 素键的性质 (弱与共价) 和输出型 (σ-洞与π-洞) 是由金属身份和连接体环境调节的.
- 这项理论工作提供了对金属连接体和素结合的基本相互作用的洞察,这与超分子组装和材料设计有关.
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