Cobalt(III) nitrate

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Cobalt(III) nitrate
Names
IUPAC name
Cobalt(III) nitrate
Identifiers
3D model (
JSmol
)
ChemSpider
ECHA InfoCard
 100.290.572 Edit this at Wikidata
  • InChI=1S/Co.3NO3/c;3*2-1(3)4/q+3;3*-1
    Key: JGDIMKGYTAZXOY-UHFFFAOYSA-N
  • InChI=1/Co.3NO3/c;3*2-1(3)4/q+3;3*-1
    Key: JGDIMKGYTAZXOY-UHFFFAOYAI
  • [Co+3].O=[N+]([O-])[O-].[O-] [N+]([O-])=O.[O-] [N+]([O-])=O
Properties
Co(NO3)3
Molar mass 244.96 g/mol
Appearance green crystals
hygroscopic
Density 2.49 g/cm3
5.07 g/100 mL
Structure
cubic
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Cobalt(III) nitrate is an inorganic compound with the chemical formula Co(NO3)3.[1] It is a green, diamagnetic solid that sublimes at ambient temperature.[2]

Structure

The compound is a molecular

pm long. The O-Co-O angles for the chelating oxygen atoms in the same nitrate anion is about 68 degrees.[4] The same geometry seems to persist in carbon tetrachloride solution.[3]

Preparation and reactions

Cobalt(III) nitrate can be prepared by the reaction of dinitrogen pentoxide N
2O
5 with cobalt(III) fluoride CoF
3.[3] It can be purified by vacuum sublimation at 40 °C.[4][2]

Cobalt(III) nitrate oxidizes water, the initial green solution rapidly turns pink, with formation of cobalt(II) ions and release of oxygen.[1] Cobalt(III) nitrate can be intercalated in graphite, in the ratio of 1 molecule for each 12 carbon atoms.[2]

See also

References

  1. ^
    doi:10.1016/S0010-8545(00)82026-3
  2. ^
    doi:10.1016/0379-6779(83)90097-8
  3. ^
    doi:10.1039/J19690002699
  4. ^
    doi:10.1039/C19680000871


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