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Use of Zeise's Salt in Platinum Casting

2004

"Chemistry of the Platinum Group Metals"
chemistry_platinum_group

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Q. I am gold refining officer, and want to know the role of zeise's salt in diamond setting in platinum.

Bhupesh Mulik
core jewellery - Mumbai, Maharastra, India

Q. Role of zeise's salt in platinum casting in which diamonds are set?

Bhupesh Mulik [returning]
core jewellery - Mumbai, Maharastra, India
2005

2005

Zeise's salt

A. Zeise's salt is potassium trichloro (ethylene) platinate or K+{[Pt Cl3(C2H4)]-. H2O. It is made by reacting potassium chloride with platinum dichloride in ethanol and was one of the first, if not the first, organometallic complex to be made. The alkene group is a good pi-electron acceptor ligand. Its use with regard to platinum is presumably as a source of soluble platinum, although personally I have never come across the use of this particular complex.

Trevor Crichton
R&D practical scientist
Chesham, Bucks, UK

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