Arsenic-tribromide AsBr

Similarly, arsenic tribromide AsBrs forms when the trioxide reacts with bromine vapors. Reaction with concentrated HCI under heating produces arsenic trichloride. 

Arsenic tribromide (arsenic(III) bromide), AsBr, is similar to the trichloride. The dielectric constant at 35°C is 8.33. The compound is usually made by treating arsenic with a solution of bromine in carbon disulfide. 

Only one bromide of arsenic has been isolated this is the tribromide, AsBrs, and an investigation of the system AsBr3-Br2 gives no indication of the formation of a higher bromide. The freezing point curve shows a eutectic point at -34° C. and 81 atomic per cent, of bromine.5... 

Arsenic Triazide, As(N,) mw 327.05, N 62.73% prepn attempted by Vournazos (Ref 1) by reacting Na.azide with As tribromide 3NaN3 + AsBr, 3 NaBr + As (Nj)3, but he obtained instead wh needles of the complex sodium arsenic bromoazxde, Na([AsBrs(Nj)Jp in methyl ale soln (Ref 2)... 

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