3D model (JSmol)
CompTox Dashboard (EPA)
|Molar mass||244.96 g/mol|
|Appearance||green crystals |
|5.07 g/100 mL|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
The compound is a molecular coordination complex. The three bidentate nitrate ligands give a distorted octahedral arrangement. The nitrate ligands are planar. With D3 symmetry, the molecule is chiral. The Co-O bond lengths are about 190 pm long. The O-Co-O angles for the two oxygens in the same nitrate is about 68 degrees. The same geometry seems to persist in carbon tetrachloride solution.
Cobalt(III) nitrate oxidizes water, the initial green solution rapidly turns pink, with formation of cobalt(II) ions and release of oxygen. Cobalt(III) nitrate can be intercalated in graphite, in the ratio of 1 molecule for each 12 carbon atoms.