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.
Formation
Vanadyl perchlorate can be made by reacting
vanadium pentoxide
Vanadium(V) oxide (''vanadia'') is the inorganic compound with the formula V2 O5. Commonly known as vanadium pentoxide, it is a brown/yellow solid, although when freshly precipitated from aqueous solution, its colour is deep orange. Because o ...
with
dichlorine heptoxide
Dichlorine heptoxide is the chemical compound with the formula Cl2O7. This chlorine oxide is the anhydride of perchloric acid. It is produced by the careful distillation of perchloric acid in the presence of the dehydrating agent phosphorus pentox ...
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
Dichlorine hexoxide is the chemical compound with the molecular formula , which is correct for its gaseous state. However, in liquid or solid form, this chlorine oxide ionizes into the dark red ionic compound chloryl perchlorate , which may be tho ...
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.
References
{{Vanadium compounds
Perchlorates
Vanadium(V) compounds
Vanadyl compounds