Pervanadyl

Chemical compound
Pervanadyl
Identifiers
3D model (JSmol)
  • Interactive image
InChI
  • InChI=1S/2O.V/q;;+1
    Key: UAZIGFGVBWJXOL-UHFFFAOYSA-N
  • O=[V+]=O
Properties
Chemical formula
 O2V+
Molar mass 82.939 g·mol−1
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
Chemical compound

Pervanadyl (VO+2) is a pale yellow[1] 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:[2][3]

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

The ion can form a complex with a single aminopolycarboxylate ligand,[4] or with tridentate Schiff base ligands.[5]

The VO+2/VO2+ redox couple is used at the cathode of the vanadium redox battery.[6] The standard reduction potential of this couple is +1.00 V.[7]

From left to right: VO+2, VO2+, V3+, and V2+ in aqueous solution.

See also

  • Vanadate, vanadium(V) oxyanions

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
  • v
  • t
  • e
Vanadium(0)
  • V(CO)6
Vanadium(II)
  • VF2
  • VBr2
  • VCl2
  • VI2
  • VO
  • VS
  • VSO4
Vanadium(III)
  • VBr3
  • VCl3
  • VF3
  • VI3
  • VN
  • V2O3
  • V2(SO4)3
  • V2S3
Organovanadium(III) compounds
  • V(C9H11)3
    • Vanadium(IV)
    • VC
    • VO2
    • VOCl2
    • V(S2)2
    • VCl4
    • VF4
    Organovanadium(IV) compounds
  • VO(C5H7O2)2
    • Vanadyl(IV) compounds
    • VOSO4
    Vanadium(V)
    • V2O5
    • VOCl3
    • VOF3
    • VO2F
    • VF5
    • VCl5
    • NH4VO3
    • VOPO4
    • VO+2
    Vanadyl(V) compounds
    • VO(ClO4)3
    • VO(NO3)3