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Pervanadyl

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Chemical compound
Pervanadyl
Identifiers
3D model (JSmol)
InChI
  • InChI=1S/2O.V/q;;+1Key: UAZIGFGVBWJXOL-UHFFFAOYSA-N
SMILES
  • O==O
Properties
Chemical formula O2V
Molar mass 82.939 g·mol
Related compounds
Related compounds Vanadyl
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references
Chemical compound

Pervanadyl (VO+2) is a pale yellow oxycation of vanadium(V). It is the predominant vanadium(V) species in acidic solutions with pH between 0 and 2, and its salts are formed by protonation of vanadium(V) oxide in such solutions:

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

The ion can form a complex with a single aminopolycarboxylate ligand, or with tridentate Schiff base ligands.

The VO+2/VO redox couple is used at the cathode of the vanadium redox battery. The standard reduction potential of this couple is +1.00 V.

From left to right: VO+2, VO, V, and V in aqueous solution.

See also

References

  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. Bard, Allen J. (1985). Standard potentials in aqueous solution (1st ed.). New York: CRC Press. ISBN 9781351414746.
  3. 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.
  4. 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.
  5. Pal, Satyanarayan; Pal, Samudranil (2000). "A dimeric pervanadyl (VO2+) complex with a tridentate Schiff base ligand". Journal of Chemical Crystallography. 30 (5): 329–333. doi:10.1023/A:1009561224540. S2CID 91300997.
  6. 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.
  7. 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
Vanadium compounds
Vanadium(0)
Vanadium(II)
Vanadium(III)
Organovanadium(III) compounds
  • V(C9H11)3
    • Vanadium(IV)
    Organovanadium(IV) compounds
  • VO(C5H7O2)2
    • Vanadyl(IV) compounds
    Vanadium(V)
    Vanadyl(V) compounds
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