Azide beryllium

Beryllium azide, Be(N3)2, is a polymeric [111] white solid which decomposes hydrolytically [62] but dissolves in tetrahydrofuran. It is insoluble in ether and dichloromethane. In a flame it deflagrates weakly, but it is insensitive to thermal or mechanical shock. 

Only small samples of the compound have been made, for example, according to 

Metal hydroxide + hydrazine + nitrite (Thiele process) X 

Hydrazoic acid in a vacuum line at -180°C was condensed onto beryllium dimethyl and allowed to warm up. After melting, the reaction started at -116°C with precipitation of Be(N3)2 [112]. Also, beryllium chloride was refluxed for six days with trimethylsilyl azide in dichloromethane media to obtain a white precipitate which was not completely free of Cl [111]  

An identical experiment in ether media yielded beryllium azide chloride in the form of the etherate, ClBe(N3)[(C2H5)20]2 [HI]- 

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Beryllium Diazide (formerly called Beryllium Trinitride), Be(Ns)j mw 93 07, N 90.31% wh solid, sol in tetrahydrofuran, insol in eth and easily hydrolyzed by w(Ref 1). Obtd by Wiberg Michaud (Ref 4) when Me,Be was sublimed and reacted with a dry eth soln of excess HNS at -116°. Removal of eth and excess HNS by vac distn yielded Be(N,),. In a reactn betw a beryllium salt and an azide, Curtius Rissom (Refs 1 2) obtd an impure beryllium azide it detonated only si in a flame and is insensitive to initiation by percussion (Ref3)... 

Beryllium Acetylide A70-R Beryllium Azide A524-R Beryllium Carbide.. See under Acetylides and Carbides A71-L Beryllium Diazide A524-R Binding Energy. See under Atomic Energy A500-R... 

The preparation is analogous to that described for beryllium azide (p. 899), using diethylmagnesium in ether-dioxane. The reaction starts on thawing below 0°C. 

Carbon tetrafluoride, 1 34 3 178 Carbon tetraiodide, 3 37 Carbonyl azide, formation of, by carbohydrazide, 4 35 Carbonyl fluoride, 6 155 Carbonyls, metal, 2 229 metal, nomenclature of, 2 264 structure of, 2 232 Catalysts, beryllium chloride, 5 25 boron fluoride, 1 23 chromium(III) oxide gel, 2 190... 

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