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Chromium(III) acetate
Chemical compound / From Wikipedia, the free encyclopedia
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.
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Names | |
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IUPAC name
Chromium(III) acetate hydrate | |
Other names
chromic acetate, chromium triacetate, chromium(III) ethanoate | |
Identifiers | |
3D model (JSmol) |
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ChemSpider |
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ECHA InfoCard | 100.012.646 ![]() |
PubChem CID |
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CompTox Dashboard (EPA) |
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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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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]