1,2‐Dimethyl‐1,2‐disila‐<i>closo</i>‐dodecaborane(12), the First Silicon Analogue of an <i>ortho</i>‐Carborane

Abstract

The carborane homologous, icosahedral o-disilaborane 1 is formed together with other products upon reaction of B10H14 with bis(dimethylamino)(methyl)silane in boiling benzene. The SiSi distance of 2.308(2) Å would suggest that the Si2-unit in 1 may formally be regarded as a doubly bridged disilyne MeSiSiMe. 1 is air-stable and inert toward acids; in KOH solution, however, it decomposes within minutes.