[Ph(2) Bi-(Ge(9)) -BiPh(2) ](2-):一个由外键联结的联结体功能化的三角面Zintl离子
1Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA.
Journal of the American Chemical Society
|March 14, 2002
概括
研究人员合成了一种新型的-木团离子. 这种独特的结构具有与三角面体团结在一起的基联体,标志着团化学的重大进步.
科学领域:
- 无机化学 无机化学
- 集群化学 集群化学
- 有机金属化学 有机金属化学
背景情况:
- 三角面集群是具有独特电子和结构性质的多原子框架.
- 集群的合成和功能化是活跃研究的领域.
- 对三角面集群的外结合可以显著改变它们的反应性和特性.
研究的目的:
- 为了合成和表征一种新型的团离子,该离子与斯木联体功能化.
- 为了研究共价外键对三角面体团的可能性.
- 探索连接连体到预先形成的集群的结构影响.
主要方法:
- 从K(4) Ge(9) 中合成的nido-Ge(9)(4-) 前体在乙基二胺中与2,2,2-crypt.合成.
- 前体与三比斯穆特 (BiPh ((3)) 的反应,形成的离子.
- 由此产生的化合物 (K-2,2,2-crypt) 的结构性表征 (K-2,2,2-crypt) [Ge(9) ] 使用X射线晶体学.
主要成果:
- 成功合成了一种新型的日耳曼 - - 比斯穆特集群离子,[Ge(9) ((BiPh(2)) ((2))) ((4-).
- 阴离子采用Ge(9) 框架的单顶方形反 prism 几何形状.
- 两个二甲联体被共外结合到集群的开放面的对立顶点.
结论:
- 这项研究报告了第一例与三角面集群连接的共价外键联体的例子,该集群独立稳定.
- 这些发现扩大了对三角面集群的功能化策略的范围.
- 独特的粘合模式为设计复杂的无机和有机金属架构打开了新的道路.
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