Vanadium(II) sulfate describes a family of

inorganic compound In chemistry, an inorganic compound is typically a chemical compound that lacks carbon–hydrogen bonds, that is, a compound that is not an organic compound. The study of inorganic compounds is a subfield of chemistry known as '' inorganic chemist ...

s with the formula VSO₄(H₂O)_x where 0 ≤ x ≤ 7. The hexahydrate is most commonly encountered. It is a violet solid that dissolves in water to give air-sensitive solutions of the aquo complex. The salt is isomorphous with g(H₂O)₆O₄. Compared to the V–O bond length of 191 pm in (H₂O)₆sup>3+, the V–O distance is 212 pm in the (H₂O)₆O₄. This nearly 10% elongation reflects the effect of the lower charge, hence weakened electrostatic attraction. The heptahydrate has also been crystallized. The compound is prepared by electrolytic reduction of

vanadyl sulfate Vanadyl(IV) sulfate describes a collection of inorganic compounds of vanadium with the formula, VOSO4(H2O)x where 0 ≤ x ≤ 6. The pentahydrate is common. This hygroscopic blue solid is one of the most common sources of vanadium in the laborator ...

sulfuric acid Sulfuric acid (American spelling and the preferred IUPAC name) or sulphuric acid ( Commonwealth spelling), known in antiquity as oil of vitriol, is a mineral acid composed of the elements sulfur, oxygen and hydrogen, with the molecular formu ...

. The crystals also feature (H₂O)₆sup>2+ centers but with an extra water of crystallization. The salt is isomorphous with ferrous sulfate heptahydrate. A related salt is vanadous ammonium sulfate, (NH₄)₂V(SO₄)₂·6H₂O, a

Tutton's salt Tutton's salts are a family of salts with the formula M2M'(SO4)2(H2O)6 (sulfates) or M2M'(SeO4)2(H2O)6 (selenates). These materials are double salts, which means that they contain two different cations, M+ and M'2+ crystallized in the same regular ...

isomorphous with

ferrous ammonium sulfate Ammonium iron(II) sulfate, or Mohr's salt, is the inorganic compound with the formula (NH4)2Fe(SO4)2(H2O)6. Containing two different cations, Fe2+ and NH4+, it is classified as a double salt of ferrous sulfate and ammonium sulfate. It is a com ...

References

Vanadium(II) compounds Sulfates {{inorganic-compound-stub