Cobalt(III) nitrate

Names
IUPAC name

Cobalt(III) nitrate

Identifiers

CAS Number

* 15520-84-0

3D model (JSmol)

* Interactive image

ChemSpider |

* 9869156

PubChem CID

* 11694431

InChI

* 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

SMILES

* [Co+3].O=[N+]([O-])[O-].[O-][N+]([O-])=O.[O-][N+]([O-])=O

Properties

Chemical formula

| Co(NO3)3
Molar mass | 244.96 g/mol
Appearance  | green crystals
hygroscopic
Density | 2.49 g/cm3

Solubility in water

| 5.07 g/100 mL
Structure

Crystal structure

| cubic

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Infobox references

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]

## Contents

* 1 Structure
* 2 Preparation and reactions
* 3 See also
* 4 References

## Structure

The compound is a molecular coordination complex. The three bidentate nitrate ligands give a distorted octahedral arrangement.[3] 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.[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 N2O5 with cobalt(III) fluoride CoF3.[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

* Cobalt(III) fluoride
* Cobalt(III) chloride
* Cobalt(III) hydroxide
* Iron(III) nitrate
* Iron(III) oxalate

## References

1. ↑ 1.0 1.1 W. Levason and C. A. McAuliffe (1974): "Higher oxidation state chemistry of iron, cobalt, and nickel". Coordination Chemistry Reviews, volume 12, issue 2, pages 151-184. doi:10.1016/S0010-8545(00)82026-3
2. ↑ 2.0 2.1 2.2 E. Stumpp, G. Nietfeld, K. Steinwede, and K. D. Wageringel (1983) "Reaction of anhydrous metal nitrates with graphite". Synthetic Metals, Evolume 7, issues 1–2, pages 143-151. doi:10.1016/0379-6779(83)90097-8
3. ↑ 3.0 3.1 3.2 R. J. Fereday, N. Logan and D. Sutton (1969): "Anhydrous cobalt(III) nitrate: preparation, spectra, and reactions with some organic ligands". Journal of the Chemical Society A: Inorganic, Physical, Theoretical, volume 1969, issue 0, pages 2699-2703. doi:10.1039/J19690002699
4. ↑ 4.0 4.1 J. Hilton and S. C. Wallwork (1968): "The crystal structure of cobalt(III) nitrate", Chemical Communications, volume 1968, issue 15, pages 871-871. doi:10.1039/C19680000871

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* t
* e

Cobalt compounds

* CoBr2
* Co(CN)2
* CoCO3
* CoC2O4
* CoCl2
* CoCl3
* Co(ClO3)2
* CoF2
* CoF3
* CoI2
* Co(NO3)2
* Co(NO3)3
* CoO
* Co(OH)2
* CoS
* CoSO4
* CoSe
* Co2O3
* Co2P
* Co3O4
* Co3(PO4)2
* Co(Ac)2

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Salts and covalent derivatives of the nitrate ion

HNO3 |  |  |  | He

|
|
|
|

LiNO3 | Be(NO3)2 | B(NO3)−4 | C  | NO−3,
NH4NO3 | O  | FNO3 | Ne
NaNO3 | Mg(NO3)2 | Al(NO3)3 | Si  | P  | S  | ClONO2 | Ar
KNO3 | Ca(NO3)2 | Sc(NO3)3 | Ti(NO3)4 | VO(NO3)3 | Cr(NO3)3 | Mn(NO3)2 | Fe(NO3)3,
Fe(NO3)2 | Co(NO3)2,
Co(NO3)3 | Ni(NO3)2 | Cu(NO3)2 | Zn(NO3)2 | Ga(NO3)3 | Ge  | As  | Se  | Br  | Kr
RbNO3 | Sr(NO3)2 | Y(NO3)3 | Zr(NO3)4 | Nb  | Mo  | Tc  | Ru  | Rh  | Pd(NO3)2 | AgNO3 | Cd(NO3)2 | In  | Sn  | Sb(NO3)3 | Te  | I  | Xe(NO3)2
CsNO3 | Ba(NO3)2 |  | Hf  | Ta  | W  | Re  | Os  | Ir  | Pt  | Au  | Hg2(NO3)2,
Hg(NO3)2 | Tl(NO3)3,
TlNO3 | Pb(NO3)2 | Bi(NO3)3
BiO(NO3) | Po  | At  | Rn
FrNO3 | Ra(NO3)2 |  | Rf  | Db  | Sg  | Bh  | Hs  | Mt  | Ds  | Rg  | Cn  | Nh  | Fl  | Mc  | Lv  | Ts  | Og
| ↓  |  |
La(NO3)3 | Ce(NO3)3,
Ce(NO3)4 | Pr  | Nd(NO3)3 | Pm  | Sm  | Eu(NO3)3 | Gd(NO3)3 | Tb(NO3)3 | Dy  | Ho  | Er  | Tm  | Yb  | Lu
Ac(NO3)3 | Th(NO3)4 | Pa  | UO2(NO3)2 | Np  | Pu  | Am  | Cm  | Bk  | Cf  | Es  | Fm  | Md  | No  | Lr

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