Zeise's salt

Zeise's salt
Names
	IUPAC name Potassium trichloro(ethene)platinate(II) hydrate
Identifiers
CAS Number	16405-35-9 ;
3D model (JSmol)	Interactive image;
ChemSpider	21241825;
ECHA InfoCard	100.158.770
EC Number	630-445-1;
PubChem CID	193510;
CompTox Dashboard (EPA)	DTXSID90936900 ;
	InChI InChI=1S/C2H4.3ClH.K.H2O.Pt/c1-2;;;;;;/h1-2H2;3*1H;;1H2;/q;;;;+1;;+2/p-3 Key: DCEGWIMEFFONKJ-UHFFFAOYSA-K;
	SMILES [K+].C=C.Cl[Pt-](Cl)Cl.O;
Properties
Chemical formula	C2H6Cl3KOPt
Molar mass	386.60 g·mol−1
Appearance	Yellow to orange crystals
Melting point	220 °C
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Zeise's salt, potassium trichloro(ethylene)platinate(II) hydrate, is the chemical compound with the formula K[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 a transition metal alkene complex and is named for its discoverer, William Christopher Zeise.