Pyramidane

Abstract

The development of the concept of nonclassical structures of compounds with a tetracoordinated pyramidal carbon atom is considered on the basis of the example of stabilisation and the electronic structure of the parent representative of polyhedral compounds of this type — pyramidane. The data concerned with the synthesis and determination of molecular structures of analogues of pyramidane with elements of 14 group (Si, Ge, Sn, Pb) in apices of square pyramids is presented. Refs 15. Figs 7.