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作为M³⁺金属离子的主体的金基冠状体:环形大小很重要

Suelen Ferreira Sucena¹, Türkan Ilgin Demirer¹, Anna Baitullina¹

¹Institute of Chemistry and Biochemistry, Freie Universität Berlin, Fabeckstr. 34/36, 14195 Berlin, Germany.

Molecules (Basel, Switzerland)

|July 29, 2023

概括

这项研究展示了一种使用金属离子酸度和几何学的多核协调化合物的新型自组装方法. 基于黄金的冠状体封装了各种金属离子,形成了结构,其大小取决于中心离子.

科学领域:

协调化学协调化学
超分子化学超分子化学
材料科学材料科学材料科学

背景情况:

对多核协调化合物的受控合成至关重要.
体特性和金属离子特性影响聚合物形成.
皮尔森的酸理论和协调偏好提供了组织原则.

研究的目的:

探索基于黄金的多核协调化合物的自我组装.
为了研究中心金属离子 (M3+) 对冠状石形成的模板效应.
了解中心离子大小与由此产生的组装结构之间的关系.

主要方法:

使用 2,6-dipicolinoylbis(N,N-diethylthiourea) (H2L1ethyl) 连接物的一反应.
包括黄金 (I) 前体 ([AuCl (tht)) 和各种M3+盐 (Sc,Y,La,Ln,Ga,In) 在内.
由此产生的以黄金为基础的冠状体的结构特征,其中包含中心金属离子.

主要成果:

形成基于黄金的{Au3(L1乙基) 3}3+或{Au2(L1乙基) 2}2+冠状体.
中心M3+离子模板形成这些冠状体.
冠状环的大小取决于封装的M3+离子的离子半径.
像Ga3+这样的小离子形成[Ga{Au2(L1ethyl) 2}]+组件.
较大的离子 (Sc3+,In3+) 产生中性[M{Au3(L1ethyl) 3}]单位,具有九坐标的中心离子.

结论:

展示了一种用于构建金属模板多核协调化合物的多功能方法.
突出了金属离子特性 (酸度,大小) 在指导自组装中的作用.
呈现了基于封装的客体离子的可调结构的新金基冠状体.

关键词:

亚洛伊尔提欧ureaas 的相关信息皇冠和冠冕是什么意思黄金黄金黄金黄金黄金兰他化物兰他化物自动组装的自动组装机

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