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Vanadyl perchlorate

Vanadyl perchlorate or vanadyl triperchlorate is a golden yellow coloured liquid or crystalline compound of vanadium, oxygen and perchlorate. The substance consists of molecules covalently bound and is quite volatile; it ignites organic solvents on contact and explodes at temperatures above 80 Ã‚°C.

Formation

Vanadyl perchlorate can be made by reacting vanadium pentoxide with dichlorine heptoxide at 5 Ã‚°C. It is purified by vacuum distillation and recrystallisation at 21 Ã‚°C.

A solution of vanadium(V) perchlorate can be made by dissolving vanadium pentoxide in perchloric acid.

The reaction of vanadium pentoxide and dichlorine hexoxide could produce VO(ClO<sub>4</sub>)<sub>3</sub>:

2 V<sub>2</sub>O<sub>5</sub> + 12 Cl<sub>2</sub>O<sub>6</sub> → 4 VO(ClO<sub>4</sub>)<sub>3</sub> + 12 ClO<sub>2</sub> + 3 O<sub>2</sub>

Reactions

It can react with vanadium oxychloride to form another vanadyl perchlorate (VO<sub>2</sub>ClO<sub>4</sub>):

4 VO(ClO<sub>4</sub>)<sub>3</sub> + 2 VOCl<sub>3</sub> → 6 VO<sub>2</sub>ClO<sub>4</sub> + 6 ClO<sub>2</sub> + 3 Cl<sub>2</sub> + 3 O<sub>2</sub>

Related compounds

Other perchlorates include pervanadyl perchlorate, also known as dioxovanadium perchlorate, which contains VO<sub>2</sub><sup>+</sup> ions, vanadyl diperchlorate, oxovanadium perchlorate or vanadium(IV) perchlorate, and VO(ClO<sub>4</sub>)<sub>2</sub>, which dissolves in water. Vanadic perchlorate, also known as vanadium(III) perchlorate solution in water, is a green-tinged blue colour, significantly different to most other V(III) solutions, which are complexed.

References