Atomistry » Vanadium » Chemical Properties » Vanadyl Dibromide
Atomistry »
  Vanadium »
    Chemical Properties »
      Vanadyl Dibromide »

Vanadyl Dibromide, VOBr2

Vanadyl Dibromide, VOBr2, is obtained by passing bromine vapour or, preferably, a mixture of sulphur bromide, S2Br2, and bromine over a mixture of vanadium pentoxide and sulphur at a red heat; the product is heated in vacuo at 240° C., whereupon the vanadyl dibromide is obtained as a yellow powder. An alternative method of preparation consists in heating vanadium oxytribromide, VOBr3, to 180° C. Vanadyl dibromide is no doubt present in the blue solution which results when hypovanadic oxide, VO2, is dissolved in hydrobromic acid.

Vanadyl dibromide is a hygroscopic, unstable compound. It dissolves in water to give a blue solution. On being heated in air it forms vanadium pentoxide; in vacuo at 240° C. it partly sublimes and partly decomposes, with evolution of bromine and formation of a violet residue of vanadium oxymonobromide, VOBr. The dielectric constant has been investigated.

No double salts of vanadyl dibromide have been prepared.

Last articles

Zn in 7VD8
Zn in 7V1R
Zn in 7V1Q
Zn in 7VPF
Zn in 7T85
Zn in 7T5F
Zn in 7NF9
Zn in 7M4M
Zn in 7M4O
Zn in 7M4N
© Copyright 2008-2020 by
Home   |    Site Map   |    Copyright   |    Contact us   |    Privacy