Potassium Trichloro ethylene platinate II

Potassium Trichloro(ethylene)platinate(II), K PtCl3(C2H4) 159 ... 

This is about 100% in excess of the theoretical quantity required for precipitating all of the potassium in potassium trichloro(ethylene)platinic(II) acid as the chloride. 

Potassium trichloro(ethylene)platinate(II) 1-hydrate can be isolated in about a 7-g. quantity by cooling to 0° the yellow aqueous solution obtained from flask A (Fig. 18) after absorption of ethylene is complete. Tetraehloro-(dipropylene)diplatinum(II) can be prepared by the same procedure used for the ethylene compound except that twice the time of shaking is needed for propylene absorption and that final evaporations must be carried out below 40°.6... 

C2HftCl3KPt, Potassium trichloro(ethylene)platinate(II), 43B, 1037 C2HgBr3KOPt, Potassium tribromo(ethylene)platinate(II) monohydrate, 30B, 292... 

Potassium trichloro(ethene)platinate(II), also known as Zeise s salt, has the formula K[PtCl3(C2H4)]H20 and contains rj -ethylene ligand. The compound is a yeUow-coloured coordination complex that is stable in air. The platinum atom has a square planar geometry. While reacting K2PtCl4 with ethanol in 1827, a Danish chemist Zeise synthesized this metal olefin complex containing a platinum-bound ethylene moiety, which incidentally represented the first metal—olefin complex. 

The method of direct (immediate) interaction of reactants is widely used for obtaining complexes with multicenter coordination bonds (71-complexes). Using it, some methods to prepare ethylene complexes have been elaborated. Thus, the interaction of ethylene with chloroplatinatodipotassium in the presence of SnCl2 2H20 in nitrogen atmosphere (3.60) yields monohydrate of potassium trichloro (r -ethylene)platinate(II) (salt of Zeise) [11] ... 

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