Chromium(III) acetate

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Chromium(III) acetate
Names
IUPAC name
Chromium(III) acetate hydrate
Other names
chromic acetate,
chromium triacetate,
chromium(III) ethanoate
Identifiers
3D model (
JSmol
)
ChemSpider
ECHA InfoCard
 100.012.646 Edit this at Wikidata
  • InChI=1/2C2H4O2.Cr/c2*1-2(3)4;/h2*1H3,(H,3,4);/q;;+2/p-2
    Key: LRCIYVMVWAMTKX-NUQVWONBAT
  • 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
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)
-5104.0·10−6 cm3/mol
Structure
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).
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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.

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.[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

References

  1. ^ "Chromium (III) compounds". National Pollutant Inventory. Australian Government Department of Agriculture, Water and the Environment. Retrieved 14 April 2021.
  2. ^
    ISBN 978-0-08-037941-8
    .
  3. ^
    doi:10.1021/ic00136a025
    .
  4. doi:10.1021/ed074p432
    .
  5. doi:10.1002/cber.19090420318
    .
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