Beryllium azide

Beryllium azide, Be(N3)2, is an inorganic compound. 
Synthesis.
Beryllium azide has been synthesised by the reaction of beryllium chloride with neat trimethylsilyl azide:
Alternatively, dimethylberyllium reacts with hydrazoic acid in dry diethyl ether at −116 °C:
Structure.
IR and Raman spectra suggest that beryllium azide consists of infinite chains, with tetrahedrally coordinated Be2+ ions linked by end-on bridging N3− ions.