Chromium acetate hydroxide
13(OAc)12.svg?lang=en) | |
| Names | |
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| IUPAC name
Chromium(III) acetate hydroxide
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| Other names
Acetic acid of the chromium salt,
Chromium(III)acetatehydroxide,Cr24%, Chromic acetate hydroxide, Chromium - acetic acid (3:7) dihydrate, Chromium Acetic Acid, Ccris 6345, | |
| Identifiers | |
3D model (JSmol)
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| ECHA InfoCard | 100.049.480 |
| EC Number |
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CompTox Dashboard (EPA)
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| Properties | |
| C24H48Cr8O36 | |
| Molar mass | 1328.581 g·mol−1 |
| Appearance | violet solid |
| Density | 1.484 g/cm3 |
| soluble | |
| Hazards | |
| Occupational safety and health (OHS/OSH): | |
Main hazards
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Harmful by inhalation, in contact with skin and if swallowed, Irritating to eyes, respiratory system and skin |
| GHS labelling: | |
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| Warning | |
| H302, H312, H315, H317, H319, H332, H335 | |
| Safety data sheet (SDS) | MSDS |
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 acetate hydroxide is the coordination complex with the formula [Cr2(OH)3(OAc)3]4. A dark violet solid, it crystallizes as the triacontatetrahydrate (34 molecules of water of crystallization). It is water soluble.[1]
Structure
[edit]The complex is a tetramer of binuclear Cr2(OH)3(OAc)3. The subunits are linked by acetate and hydroxide ligands. The oxidation state of chromium is +3, which explains the stability of the complex since octahedral d3 ions give kinetically robust complexes. Overall, the complex's structure is unusual compared to other transition metal carboxylate complexes.
See also
[edit]References
[edit]- ^ Eshel, Michal; Bino, Avi; Felner, Israel; Johnston, David C.; Luban, Marshall; Miller, Lance L. (2000). "Polynuclear Chromium(III) Carboxylates. 1. Synthesis, Structure, and Magnetic Properties of an Octanuclear Complex with a Ring Structure". Inorganic Chemistry. 39 (7): 1376–1380. doi:10.1021/ic9907009. PMID 12526439.