Ugrinov Angel, Sevov Slavi C
Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA.
J Am Chem Soc. 2002 Mar 20;124(11):2442-3. doi: 10.1021/ja017813n.
The title anion was synthesized by a reaction of nido-Ge(9)(4-), made from K(4)Ge(9) dissolved in ethylenediamine and 2,2,2-crypt(4,7,13,16,21,24-hexaoxa-1,10-diazabicyclo[8.8.8]hexacosane), with BiPh(3). It was structurally characterized in (K-2,2,2-crypt)(2)[Ge(9)(BiPh(2))(2)].en which was crystallized from the solution. The anion is a monocapped square antiprism of Ge(9) with two diphenylbismuth ligands exo-bonded to opposite vertexes of the open face of the cluster. This is the first example where covalently exo-bonded ligands are attached to a deltahedral cluster that can exist without them as well.
通过将溶解在乙二胺和2,2,2-穴醚（4,7,13,16,21,24-六氧杂-1,10-二氮杂双环[8.8.8]二十六烷）中的K₄Ge₉制得的巢式Ge(9)⁴⁻与BiPh₃反应，合成了标题阴离子。它在从溶液中结晶得到的(K₂,2,2-穴醚)₂[Ge(9)(BiPh₂)₂]·en中进行了结构表征。该阴离子是一个Ge(9)的单帽方反棱柱体，两个二苯基铋配体以外部键合的方式连接到簇开放面相对顶点上。这是第一个共价外部键合配体连接到一个也可以在没有它们的情况下存在的三角面体簇的例子。
