Styx Numbers and Rules of Boron Hydrides

Abstract

Boron hydrides are a class of electron deficient compounds that have unusual bonding behavior and form cages and clusters. The electron deficient BH3 is the simplest boron hydride which exists as a dimer B2 H6 (diborane). The structure of B2 H6 contains bridging B-H-B (or BHB) bonds; quite different to those of carbon hydrides.