Platinum(II) acetate
Chemical compound
From Wikipedia, the free encyclopedia
Platinum(II) acetate is a purple-colored coordination complex. The complex adopts an unusual structure consisting of a square array of Pt atoms.
8_(PLATAC10).png)
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| Names | |
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| Other names
platinum diacetate, platinum acetate | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
PubChem CID |
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CompTox Dashboard (EPA) |
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| Properties | |
| Pt(CH3CO2)2 | |
| Molar mass | 315.19 g/mol |
| Appearance | purple solid |
| Density | 3.374 g/cm3 |
| Melting point | 245 °C (473 °F; 518 K) decomposition |
| Insoluble | |
| Structure[1] | |
| tetragonal | |
| P43212, No. 96 | |
a = 10.254 Å, c = 50.494 Å | |
Formula units (Z) |
8 tetrameric molecules |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Structure
According to X-ray crystallography, the complex is tetrameric, in contrast to the trimeric palladium analog.[2] The four platinum atoms form a square cluster, with eight bridging acetate ligands surrounding them. The compound has slight distortions from idealized D2d symmetry. The crystal is tetragonal.[1]
Preparation
Several syntheses of platinum(II) acetate have been reported. Geoffrey Wilkinson et al. reported a highly temperamental synthesis from sodium hexahydroxyplatinate, nitric acid, and acetic acid. This intermediate solution was reducted with formic acid.[3]
Alternatively, the complex can be prepared by the reaction of silver acetate with platinum(II) chloride.[4]