Synthesis, Structures and Reactions of Polychalcogenadisilabicyclo[l.m.n]alkanes and Their Germanium Analogues

Abstract

1,3-Bis[tris(trimethylsilyl)methyl]-2,4,5-trichalcogena-1,3-disilabicyclo[1.1.1]pentanes display unusual short bridgehead Si---Si distances despite the absence of formal Si—Si bonds, and chalcogen---chalcogen interactions are observed by nmr, X-ray analysis and electronic spectroscopy.