Platinum(II) acetate

Platinum(II) acetate is a purple-colored coordination complex. The complex adopts an unusual structure consisting of a square array of Pt atoms.

Platinum(II) acetate

Names
Other names platinum diacetate, platinum acetate
Identifiers
CAS Number	3375-34-6 N[EPA]
3D model (JSmol)	Interactive image
ChemSpider	9326225
PubChem CID	11151117
CompTox Dashboard (EPA)	DTXSID501336798
InChI InChI=1S/2C2H4O2.Pt/c2*1-2(3)4;/h2*1H3,(H,3,4);/q;;+2/p-2 Key: QCSGLAMXZCLSJW-UHFFFAOYSA-L
SMILES CC(=O)[O-].CC(=O)[O-].[Pt+2]
Properties
Chemical formula	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
Solubility in water	chloroform
Structure[1]
Crystal structure	tetragonal
Space group	P43212, No. 96
Lattice constant	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). Infobox references

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.^[2]

Alternatively, the complex can be prepared by the reaction of silver acetate with platinum(II) chloride.^[3]

Structure

According to X-ray crystallography, the complex is tetrameric, in contrast to the trimeric palladium analog.^[4] The four platinum atoms form a square cluster, with eight bridging acetate ligands surrounding them. The compound has slight distortions from idealized D_2d symmetry. The crystal is tetragonal.^[1]