In chemistry, a vanadate is an anionic coordination complex of vanadium. Often vanadate refers to oxoanions of vanadium, most of which exist in its highest oxidation state of +5. The complexes [V(CN)6]3− and [V2Cl9]3− are referred to as hexacyanovanadate(III) and nonachlorodivanadate(III), respectively.
A simple vanadate ion is the tetrahedral orthovanadate anion, VO3−4 (which is also called vanadate(V)), which is present in e.g. sodium orthovanadate and in solutions of V2O5 in strong base (pH > 13[1]). Conventionally this ion is represented with a single double bond, however this is a resonance form as the ion is a regular tetrahedron with four equivalent oxygen atoms.
Additionally a range of polyoxovanadate ions exist which include discrete ions and "infinite" polymeric ions.[2] There are also vanadates, such as rhodium vanadate, RhVO4, which has a statistical rutile structure where the Rh3+ and V5+ ions randomly occupy the Ti4+ positions in the rutile lattice,[3] that do not contain a lattice of cations and balancing vanadate anions but are mixed oxides.
In chemical nomenclature when vanadate forms part of the name, it indicates that the compound contains an anion with a central vanadium atom, e.g. ammonium hexafluorovanadate is a common name for the compound [NH4]3[VF6] with the IUPAC name of ammonium hexafluoridovanadate(III).
^Cotton, F. Albert; Wilkinson, Geoffrey; Murillo, Carlos A.; Bochmann, Manfred (1999), Advanced Inorganic Chemistry (6th ed.), New York: Wiley-Interscience, ISBN 0-471-19957-5
^Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.
In chemistry, a vanadate is an anionic coordination complex of vanadium. Often vanadate refers to oxoanions of vanadium, most of which exist in its highest...
Vanadates can refer to: Ammonium metavanadate Sodium vanadate (disambiguation) This disambiguation page lists articles associated with the title Vanadates...
Bismuth vanadate is the inorganic compound with the formula BiVO4. It is a bright yellow solid. It is widely studied as visible light photo-catalyst with...
names that have since been given to vanadinite are johnstonite and lead vanadate. Vanadinite occurs as a secondary mineral in the oxidized zone of lead-bearing...
exist as vanadyl derivatives, which contain the VO2+ center. Ammonium vanadate(V) (NH4VO3) can be successively reduced with elemental zinc to obtain the...
to give various polyoxovanadates. Ultimately, decavanadate is formed. Vanadates exhibit a variety of biological activities, in part because they serve...
Lutetium vanadate is inorganic compound with ferromagnetic and semiconducting properties, with the chemical formula of Lu2V2O7 with the same structure...
Editorial Complutense. pp. 323–325. ISBN 978-84-89784-33-8. "Yttrium Vanadate (YVO4) Crystal". Casix. Archived from the original on May 17, 2008. Retrieved...
compound is prepared by the addition of ammonium salts to solutions of vanadate ions, generated by dissolution of V2O5 in basic aqueous solutions, such...
are associated with higher photocurrent, or higher performance. Bismuth Vanadate has also been studied for solar H 2 {\displaystyle {\ce {H2}}} generation...
through multiple ligand states within the photosensitizer modules. Bismuth vanadate is a visible-light-driven photocatalyst with a bandgap of 2.4 eV. BV have...
exist as vanadyl derivatives, which contain the VO2+ center. Ammonium vanadate(V) (NH4VO3) can be successively reduced with elemental zinc to obtain the...
likely involving a lithium vanadate flux process, as Chatham's emeralds do not have any water and contain traces of vanadate, molybdenum and vanadium....
Carnotite is a potassium uranium vanadate radioactive mineral with chemical formula K2(UO2)2(VO4)2·3H2O. The water content can vary and small amounts of...
similarities with phosphoric acid H3PO4 though it has a much more complex vanadate oxoanion chemistry. Chromic acid H2CrO4, has similarities with sulfuric...
coordinated phosphate (PO43−) anion, sometimes with arsenate (AsO43−) and vanadate (VO43−) substitutions, along with chloride (Cl−), fluoride (F−), and hydroxide...
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