Pervanadyl

Pervanadyl is jargon that has two meanings.

Pervanadyl can refer to aquo complexes containing (V O+2). This pale yellow^[1] oxycation of vanadium(V) is the predominant vanadium(V) species in acidic solutions with pH between 0 and 2. Like permanganate, pervanadate features the metal in its highest oxidation state.

Pervanadyl also can refer to peroxo derivatives of vanadium(V) which are often abbreviated VO(O₂)⁺.^[2] Several vanadium(V) peroxides have been characterized.^[3]

Quick facts Identifiers, Properties ...

Pervanadyl
Identifiers
CAS Number	18252-79-4^{N[chemspider]}
3D model (JSmol)	Interactive image
ChEBI	CHEBI:30048
ChemSpider	21864966
Gmelin Reference	1172
InChI InChI=1S/2O.V/q;;+1 Key: UAZIGFGVBWJXOL-UHFFFAOYSA-N
SMILES O=[V+]=O
Properties
Chemical formula	VO+2
Related compounds
Related compounds	Vanadyl
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

The former are formed by protonation of vanadium(V) oxide in such solutions:^[4]^[5]

V₂O₅ + 2 H⁺ → 2 VO+2 + H₂O (K = 3.42×10⁻²)

The ion can form a complex with a single aminopolycarboxylate ligand,^[6] or with tridentate Schiff base ligands.^[7]

The VO+2/VO²⁺ redox couple is used at the cathode of the vanadium redox battery.^[8] The standard reduction potential of this couple is +1.00 V.^[9]

[1]
Kustin, Kenneth; Macara, Ian G. (November 1982). "The New Biochemistry of Vanadium". Comments on Inorganic Chemistry. 2 (1–2): 1–22. doi:10.1080/02603598208078107.
[2]
Nucci, L.; Guidelli, R.; Raspi, G. (1973). "Electrochemical behavior of mixtures of pervanadyl ion and hydrogen peroxide in 1M perchloric acid on mercury and platinized platinum". Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases. 69: 82–93. doi:10.1039/f19736900082.{{cite journal}}: CS1 maint: multiple names: authors list (link)
[3]
Campbell, N.J.; Capparelli, M.V.; Griffith, W.P.; Skapski, A.C. (1983). "On the existence of triperoxo vanadium complexes. X-ray crystal structures of K3[VO(O2)2(C2O4]· H2O2 and of (NH4)[VO(O2)2(bipy)·4H2O". Inorganica Chimica Acta. 77: L215–L216. doi:10.1016/S0020-1693(00)82620-1.
[4]
Bard, Allen J. (1985). Standard potentials in aqueous solution (1st ed.). New York: CRC Press. ISBN 9781351414746.
[5]
LaSalle, M. J.; Cobble, James W. (June 1955). "The Entropy and Structure of the Pervanadyl Ion". The Journal of Physical Chemistry. 59 (6): 519–524. doi:10.1021/j150528a010.
[6]
Yamada, Shinkichi.; Ukei, Yuko.; Tanaka, Motoharu. (April 1976). "Kinetics and mechanism of the complexation reactions of pervanadyl ion with some aminopolycarboxylates". Inorganic Chemistry. 15 (4): 964–967. doi:10.1021/ic50158a048.
[7]
Pal, Satyanarayan; Pal, Samudranil (2000). "A dimeric pervanadyl (VO2+) complex with a tridentate Schiff base ligand". Journal of Chemical Crystallography. 30 (5): 329–333. Bibcode:2000JCCry..30..329P. doi:10.1023/A:1009561224540. S2CID 91300997.
[8]
Jin, Jutao; Fu, Xiaogang; Liu, Qiao; Liu, Yanru; Wei, Zhiyang; Niu, Kexing; Zhang, Junyan (25 June 2013). "Identifying the Active Site in Nitrogen-Doped Graphene for the VO 2+ /VO 2 + Redox Reaction". ACS Nano. 7 (6): 4764–4773. doi:10.1021/nn3046709. PMID 23647240.
[9]
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

See also

References

Related Articles