Chromium(III) acetate

Names
IUPAC name

Chromium(III) acetate hydrate

Other names

chromic acetate,
chromium triacetate,
chromium(III) ethanoate

Identifiers

CAS Number

* 32591-52-9 Y

3D model (JSmol)

* Interactive image

ChemSpider |

* 13394 Y

PubChem CID

* 14012

InChI

* InChI=1/2C2H4O2.Cr/c2*1-2(3)4;/h2*1H3,(H,3,4);/q;;+2/p-2

Key: LRCIYVMVWAMTKX-NUQVWONBAT

SMILES

* O1C(C)=[O+][Cr-3]6(O23)([OH2+])([O+]=C(C)O4)[O+]=C(C)O[Cr-3]24([OH2+])([O+]=C(C)O5)[O+]=C(C)O[Cr-3]135([OH2+])[O+]=C(C)O6

Properties

Chemical formula

| C12H36ClCr3O22
Molar mass | 723.84 g·mol−1
Appearance  | grayish-green to blueish-green solid
Density | 1.662 g/cm3
Melting point |  1,152[1] °C (2,106 °F; 1,425 K)

Magnetic susceptibility (χ)

| -5104.0·10−6 cm3/mol
Structure

Coordination geometry

| octahedral
Related compounds

Related compounds

| Manganese(III) acetate
Iron(III) acetate

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

Y verify (what is YN ?)
Infobox references

Chromium(III) acetate, commonly known as basic chromium acetate,[2] describes a family of salts where the cation has the formula [Cr3O(O2CCH3)6(OH2)3]+. The trichromium cation is encountered with a variety of anions, such as chloride and nitrate. Data in the table above are for the chloride hexahydrate, [Cr3O(O2CCH3)6(OH2)3]Cl(H2O)6.

The cation in basic iron acetate is isostructural with the cation in basic chromium acetate. Both feature octahedral metal centers conjoined by oxo and acetate bridging ligands.

Salts of basic chromium acetate has long attracted interest because of its distinctive structure, which features octahedral Cr(III) centers, a triply bridging oxo ligand, six acetate ligands, and three aquo ligands.[2] The same structure is shared with basic iron acetate and basic manganese acetate.[2][3] Little evidence exists for a simple chromium(III) acetate, i.e. lacking the oxo ligand.[4] Chromium(III) acetate is a blue/grey-green powder, which is soluble in water. It is still[3] prepared according to the original procedure from 1909.[5]

## See also

* Chromium acetate hydroxide
* Chromium(II) acetate

## References

1. ↑ "Chromium (III) compounds". Australian Government Department of Agriculture, Water and the Environment. http://www.npi.gov.au/resource/chromium-iii-compounds.
2. ↑ 2.0 2.1 2.2 Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.
3. ↑ 3.0 3.1 Kurt J. Schenk; Hans U. Güdel (1982). "Low-temperature structural and spectroscopic properties of [Cr3O(CH3COO)6(H2O)3]Cl.6H2O". Inorg. Chem. 21 (6): 2253–2256. doi:10.1021/ic00136a025.
4. ↑ Erre, Liliana Strinna; Micera, Giovanni; Glowiak, Tadeusz; Kozlowski, Henry (April 1997). "Chromium (III) Acetate, Chromium (III) Acetate Hydroxide, or µ3-Oxo-esakis-(µ2-acetato-O,O') - triaqua-trichromium (III) Acetate? Determining the Structure of a Complex Compound by Analytical and Spectroscopic Methods". Journal of Chemical Education 74 (4): 432. doi:10.1021/ed074p432. Bibcode: 1997JChEd..74..432E.
5. ↑ R. Weinland; P. Dinkelacker (1909). "Über Salze einer Hexaacetato(formiato)‐trichrombase. II". Berichte der Deutschen Chemischen Gesellschaft 42 (3): 2997–3018. doi:10.1002/cber.19090420318. https://zenodo.org/record/1426357.

* v
* t
* e

Chromium compounds

Chromium(0)|

* Cr(CO)6

| Organochromium(0) compounds|

* Cr(C6H6)2
* CrC6H6(CO)3

|

Chromium(II)|

* Cr(C2H3O2)2
* CrBr2
* Cr3C2
* Cr(C2O4)
* CrCl2
* CrF2
* CrO
* CrSe
* CrSi2
* CrSO4

| Organochromium(II) compounds|

* Cr(C5H5)2

|

Chromium(II, III)|

* Cr3C2

Chromium(III)|

* Cr(C2H3O2)3
* CrB
* CrBr3
* CrCl3
* CrF3
* CrI3
* CrN
* Cr(NO3)3
* Cr(OH)3
* Cr2O3
* Cr2S3
* Cr2(SO4)3
* Cr2Te3

Chromium(IV)|

* CrCl4
* CrF4
* CrO2

Chromium(V)|

* CrF5
* K3Cr(O2)4

Chromium(VI)|

* CrO3
* CrS3
* CrO(O2)2
* H2CrO4/H2Cr2O7
* CrO2F2
* CrO2Cl2
* C5H5NHCrO3Cl
* CrF6 (hypothetical)

* v
* t
* e

Acetyl halides and salts of the acetate ion

AcOH |  |  |  | He
LiOAc | Be(OAc)2
BeAcOH | B(OAc)3 | AcOAc
ROAc | NH4OAc | AcOOH | FAc | Ne
NaOAc | Mg(OAc)2 | Al(OAc)3
ALSOL
Al(OAc)2OH
Al2SO4(OAc)4 | Si  | P  | S  | ClAc | Ar
KOAc | Ca(OAc)2 | Sc(OAc)3 | Ti(OAc)4 | VO(OAc)3 | Cr(OAc)2
Cr(OAc)3 | Mn(OAc)2
Mn(OAc)3 | Fe(OAc)2
Fe(OAc)3 | Co(OAc)2,
Co(OAc)3 | Ni(OAc)2 | Cu(OAc)2 | Zn(OAc)2 | Ga(OAc)3 | Ge  | As(OAc)3 | Se  | BrAc | Kr
RbOAc | Sr(OAc)2 | Y(OAc)3 | Zr(OAc)4 | Nb  | Mo(OAc)2 | Tc  | Ru(OAc)2
Ru(OAc)3
Ru(OAc)4 | Rh2(OAc)4 | Pd(OAc)2 | AgOAc | Cd(OAc)2 | In  | Sn(OAc)2
Sn(OAc)4 | Sb(OAc)3 | Te  | IAc | Xe
CsOAc | Ba(OAc)2 |  | Hf  | Ta  | W  | Re  | Os  | Ir  | Pt(OAc)2 | Au  | Hg2(OAc)2,
Hg(OAc)2 | TlOAc
Tl(OAc)3 | Pb(OAc)2
Pb(OAc)4 | Bi(OAc)3 | Po  | At  | Rn
Fr  | Ra  |  | Rf  | Db  | Sg  | Bh  | Hs  | Mt  | Ds  | Rg  | Cn  | Nh  | Fl  | Mc  | Lv  | Ts  | Og
| ↓  |  |
La(OAc)3 | Ce(OAc)x | Pr  | Nd  | Pm  | Sm(OAc)3 | Eu(OAc)3 | Gd(OAc)3 | Tb  | Dy(OAc)3 | Ho(OAc)3 | Er  | Tm  | Yb(OAc)3 | Lu(OAc)3
Ac  | Th  | Pa  | UO2(OAc)2 | Np  | Pu  | Am  | Cm  | Bk  | Cf  | Es  | Fm  | Md  | No  | Lr

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