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Zeise's salt : ウィキペディア英語版 | Zeise's salt
}} Zeise's salt, potassium trichloro(ethene)platinate(II), is the chemical compound with the formula K(HREF="http://www.kotoba.ne.jp/word/11/platinum" TITLE="platinum">PtCl3(C2H4) )·H2O. The anion of this air-stable, yellow, coordination complex contains an η2-ethylene ligand. The anion features a platinum atom with a square planar geometry. The salt is of historical importance in the area of organometallic chemistry as one of the first examples of an transition metal alkene complex. ==Preparation== This compound is commercially available as a hydrate. The hydrate is commonly prepared from K2() and ethylene in the presence of a catalytic amount of SnCl2. The water of hydration can be removed ''in vacuo''.
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