Tetraazidomethane

Tetraazidomethane is a colorless, highly explosive liquid. Its chemical structure consists of a carbon atom substituted with four azide functional groups.
Synthesis.
It was first prepared by Klaus Banert in 2006 by reaction of trichloroacetonitrile with sodium azide.
Uses.
As with other polyazides, tetraazidomethane has interest as a high-energy-density material with potential uses in explosives, propellants, or fireworks. Silicon tetraazide is also a known compound.
Reactions.
Banert has reported that tetraazidomethane participates in a number of surprising reactions including hydrolysis, cycloaddition reactions with alkenes and alkynes, and reaction with phosphines to form phosphazenes.