高钒酰

高钒酰(VO₂⁺)是钒(V)的淡黄色^[1]氧合阳离子。它是pH值介于0和2之间的酸性溶液中钒(V)的主要存在形式，其盐是通过在此类溶液中氧化钒（V）的质子化形成的：^[2][3]

V
2O
5 + 2 H+
→ 2 VO+
2 + H
2O (K = 6998342000000000000♠3.42×10⁻²)

从左到右：VO+
2、VO²⁺、V³⁺、和V²⁺在水溶液中。

高钒酰
识别
CAS号	18252-79-4  Y
SMILES	O=[V+]=O
性质
化学式	O2V
摩尔质量	82.94 g·mol−1
若非注明，所有数据均出自标准状态（25 ℃，100 kPa）下。

该离子可以与单个氨基多羧酸盐配体^[4]或与三齿席夫碱配体形成络合物。^[5]

VO+
2/VO²⁺氧化还原电对用于钒氧化还原电池的阴极。^[6]这对电偶的标准还原电位为 +1.00 V。^[7]

参考文献

1. Kustin, Kenneth; Macara, Ian G. The New Biochemistry of Vanadium. Comments on Inorganic Chemistry. November 1982, 2 (1–2): 1–22. doi:10.1080/02603598208078107.
2. Bard, Allen J. Standard potentials in aqueous solution 1st. New York: CRC Press. 1985. ISBN 9781351414746.
3. LaSalle, M. J.; Cobble, James W. The Entropy and Structure of the Pervanadyl Ion. The Journal of Physical Chemistry. June 1955, 59 (6): 519–524. doi:10.1021/j150528a010.
4. Yamada, Shinkichi.; Ukei, Yuko.; Tanaka, Motoharu. Kinetics and mechanism of the complexation reactions of pervanadyl ion with some aminopolycarboxylates. Inorganic Chemistry. April 1976, 15 (4): 964–967. doi:10.1021/ic50158a048.
5. Pal, Satyanarayan; Pal, Samudranil. A dimeric pervanadyl (VO2+) complex with a tridentate Schiff base ligand. Journal of Chemical Crystallography. 2000, 30 (5): 329–333. S2CID 91300997. doi:10.1023/A:1009561224540.
6. Jin, Jutao; Fu, Xiaogang; Liu, Qiao; Liu, Yanru; Wei, Zhiyang; Niu, Kexing; Zhang, Junyan. Identifying the Active Site in Nitrogen-Doped Graphene for the VO 2+ /VO 2 + Redox Reaction. ACS Nano. 25 June 2013, 7 (6): 4764–4773. PMID 23647240. doi:10.1021/nn3046709.
7. Cotton, F. Albert; Wilkinson, Geoffrey; Murillo, Carlos A.; Bochmann, Manfred, Advanced Inorganic Chemistry 6th, New York: Wiley-Interscience, 1999, ISBN 0-471-19957-5