异核黄金 (I) -铜 (I) 复合物与亚和混合亚宏环:合成,结构和光学特性
Rocío Donamaría1, Vito Lippolis2, José M López-de-Luzuriaga1
1Departamento de Química, Instituto de Investigación en Química (IQUR), Complejo Científico Tecnológico, Universidad de La Rioja, Madre de Dios 53, 26004, Logroño, Spain.
ChemPlusChem
|November 7, 2023
概括
这项研究探讨了具有乙烯冠冕的异金属金铜复合体. 一些复合物形成了与Au-Cu相互作用的发光化合物,而另一些则产生了非发光的离子结构.
科学领域:
- 协调化学 协调化学
- 有机金属化学 有机金属化学
- 材料科学 材料科学 材料科学
背景情况:
- 含金和铜的异金属多核复合体由于其独特的电子和结构性质而引起人们的兴趣.
- 宏循环连接物的结合可以影响金属中心的协调环境和反应性.
- 了解结构-属性关系对于设计新型功能材料至关重要.
研究的目的:
- 为了研究异金属金铜复合物的反应性与各种类乙烯和混合捐赠者宏循环连接体.
- 描述由此产生的离子和中性复合物,重点关注Au-Cu相互作用的存在或不存在.
- 探索这些复合体在固态中的光学特性,特别是发光.
主要方法:
- 合成和结构性表征的异金属金铜复合物使用乙烯冠 (L1-L3) 和功能化宏循环 (L4-L5).
- 光谱分析 (例如,UV-Vis,发光) 用于研究光学特性.
- 理论计算,包括时间依赖密度函数理论 (TD-DFT),以了解电子结构和光学行为.
主要成果:
- 离子化合物[Cu(L) ][Au(R) ]和具有Au-Cu相互作用的异质核复合物[{Au(R) 2}{Cu(L) ]的分离.
- 在研究的复合体中发现了不寻常的非经典的C-H···Au结.
- 在与Au-Cu相互作用的[{Au(R) 2}{Cu(L) }复合物中观察到发光,无论是在室温还是77K,而离子化合物通常是非发光的.
结论:
- 宏观环形联体的选择决定了离子或直接结合的异核金铜复合物的形成.
- 在这些系统中,Au-Cu金属性相互作用的存在是观察固态发光的关键.
- 这些发现有助于理解多核金属复合体中结构依赖的光学特性.
相关概念视频
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