Vanadyl perchlorate
# Vanadyl perchlorate

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

## Formation

Vanadyl perchlorate can be made by reacting vanadium pentoxide with dichlorine heptoxide at 5 °C. It is purified by distillation under a vacuum and recrystallisation at 21 °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 $VO(ClO_4)_3:$

    2 $V_2O_5$ + 12 $Cl_2O_6$ → 4 $VO(ClO_4)_3$ + 12 $ClO_2$ + 3 $O_2$

## Properties

It can react with vanadium oxychloride to form another vanadyl perchlorate $(VO_2ClO_4):$

    4 $VO(ClO_4)_3$ + 2 $VOCl_3$ → 6 $VO_2ClO_4$ + 6 $ClO_2$ + 3 $Cl_2$ + 3 $O_2$

## Related

Other perchlorates include pervanadyl perchlorate, also known as dioxovanadium perchlorate, which contains $VO_2^+$ ions, vanadyl diperchlorate, oxovanadium perchlorate or vanadium(IV) perchlorate, and $VO(ClO_4)_2,$ 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.

