高釩醯(VO2+)是(V)的淡黃色[1]氧合陽離子。它是pH值介於0和2之間的酸性溶液中釩(V)的主要存在形式,其鹽是通過在此類溶液中氧化釩(V)的質子化形成的:[2][3]

從左到右:VO+
2
VO2+、V3+、和V2+在水溶液中。
高釩醯
識別
CAS號 18252-79-4  checkY
SMILES
 
  • O=[V+]=O
性質
化學式 O2V
摩爾質量 82.94 g·mol−1
若非註明,所有數據均出自標準狀態(25 ℃,100 kPa)下。
V
2
O
5
+ 2 H+
→ 2 VO+
2
+ H
2
O (K = 3.42×10−2)

該離子可以與單個氨基多羧酸鹽配體[4]或與三齒席夫鹼配體形成絡合物。[5]

VO+
2
/VO2+氧化還原電對用於釩氧化還原電池的陰極。[6]這對電偶的標準還原電位為 +1.00 V。[7]

參考文獻

編輯
  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