Chromium(II) oxide
Names | |
---|---|
IUPAC name
chromium(II) oxide
| |
Identifiers | |
PubChem CID
|
|
CompTox Dashboard (EPA)
|
|
Properties | |
CrO | |
Molar mass | 67.996 g/mol |
Appearance | black |
Melting point | 300 °C (572 °F; 573 K) (decomposes) |
Structure | |
cubic, cF8 | |
Space group
|
Fm3m, No. 225 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
what is ?) | (|
Infobox references | |
Chromium(II) oxide (CrO) is an inorganic compound composed of chromium and oxygen.[1] It is a black powder that crystallises in the rock salt structure.[2] Hypophosphites may reduce chromium(III) oxide to chromium(II) oxide:
- H3PO2 + 2 Cr2O3 → 4 CrO + H3PO4
It is readily oxidized by the atmosphere. CrO is basic, while CrO3 is acidic, and Cr2O3 is amphoteric.[3]
See also[]
- Chromium(IV) oxide
- Chromium(VI) oxide
References[]
- ^ Satish. Anand, Raj. Kumar (1989), Dictionary of Inorganic Chemistry, Anmol Publications, ISBN 978-81-7041-236-6
- ^ Egon Wiberg, Arnold Frederick Holleman (2001) Inorganic Chemistry, Elsevier ISBN 0-12-352651-5
- ^ Chemistry 7th edition, by Raymond Chang page 645 (problem 15.100)
Categories:
- Chromium(II) compounds
- Transition metal oxides
- Reducing agents
- Chromium–oxygen compounds
- Rock salt crystal structure
- Inorganic compound stubs