Pervanadyl
| Identifiers | |
|---|---|
3D model (JSmol) |
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| Properties | |
| 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 | |
Pervanadyl is jargon that has two meanings.
- Pervanadyl can refer to aquo complexes containing (VO+2). This pale yellow 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)+. Several vanadium(V) peroxides have been characterized.
The former are formed by protonation of vanadium(V) oxide in such solutions:
- V2O5 + 2 H+ → 2 VO+2 + H2O (K = 3.42×10−2)
The ion can form a complex with a single aminopolycarboxylate ligand, or with tridentate Schiff base ligands.
The VO+2/VO2+ redox couple is used at the cathode of the vanadium redox battery. The standard reduction potential of this couple is +1.00 V.