Platinum(II) acetate is a purple-colored

coordination complex A coordination complex consists of a central atom or ion, which is usually metallic and is called the ''coordination centre'', and a surrounding array of bound molecules or ions, that are in turn known as '' ligands'' or complexing agents. ...

. The complex adopts an unusual structure consisting of a square array of Pt atoms.

Preparation

Several syntheses of platinum(II) acetate have been reported.

Geoffrey Wilkinson Sir Geoffrey Wilkinson FRS (14 July 1921 – 26 September 1996) was a Nobel laureate English chemist who pioneered inorganic chemistry and homogeneous transition metal catalysis. Education and early life Wilkinson was born at Springside, Todm ...

''et al.'' reported a synthesis from sodium hexahydroxyplatinate, nitric acid, and acetic acid. This intermediate solution was reducted with formic acid. The procedure is not highly reproducible. Alternatively, the complex can be prepared by the reaction of

silver acetate Silver acetate is an coordination compound with the empirical formula CH3CO2Ag (or AgC2H3O2). A photosensitive, white, crystalline solid, it is a useful reagent in the laboratory as a source of silver ions lacking an oxidizing anion. Synthesis a ...

with

platinum(II) chloride Platinum(II) chloride is the chemical compound Pt Cl2. It is an important precursor used in the preparation of other platinum compounds. It exists in two crystalline forms, but the main properties are somewhat similar: dark brown, insoluble in wa ...

Structure

According to

X-ray crystallography X-ray crystallography is the experimental science determining the atomic and molecular structure of a crystal, in which the crystalline structure causes a beam of incident X-rays to diffract into many specific directions. By measuring the angles ...

, the complex is tetrameric, in contrast to the trimeric palladium analog. 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.

References

{{Acetates Coordination complexes Acetate,2 Acetates