Palladium dicyanide

Palladium dicyanide
Names
	IUPAC name Palladium(2+) dicyanide
Identifiers
CAS Number	2035-66-7;
3D model (JSmol)	Interactive image;
ChemSpider	67420;
ECHA InfoCard	100.016.364
PubChem CID	6093464;
CompTox Dashboard (EPA)	DTXSID2062113 ;
	InChI InChI=1S/2CN.Pd/c21-2;/q2-1;+2 Key: XDASSWBZWFFNPX-UHFFFAOYSA-N; InChI=1/2CN.Pd/c21-2;/q2-1;+2 Key: XDASSWBZWFFNPX-UHFFFAOYAK;
	SMILES [Pd+2].[C-]#N.[C-]#N;
Properties
Chemical formula	Pd(CN)2
Molar mass	158.455 g/mol
Appearance	pale grey powder
Density	2.813 g/cm3 (He pycnometery)
Melting point	decomposes above 400C, compleat by 460C under N2
Boiling point	N/A
Solubility in water	insoluble in water, forms [Pd(CN)4]2-(aq) in alkalimetal cyanide solutions
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Palladium(II) dicyanide is the inorganic compound with the formula Pd(CN)₂. A grey solid, it is a coordination polymer. It was the first palladium compound isolated in pure form. In his attempts to produce pure platinum metal in 1804, W. H. Wollaston added mercuric cyanide to a solution prepared by dissolving impure platinum in aqua regia. This precipitated palladium cyanide which was then ignited to recover palladium metal—a new element.