Palladium dicyanide

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.

Palladium dicyanide
Names
IUPAC name
Palladium(2+) dicyanide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.016.364
  • InChI=1S/2CN.Pd/c2*1-2;/q2*-1;+2
    Key: XDASSWBZWFFNPX-UHFFFAOYSA-N
  • InChI=1/2CN.Pd/c2*1-2;/q2*-1;+2
    Key: XDASSWBZWFFNPX-UHFFFAOYAK
  • [Pd+2].[C-]#N.[C-]#N
Properties
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
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
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