Sodium tetrachloropalladate

Sodium tetrachloropalladate is an inorganic compound with the chemical formula Na₂PdCl₄. This salt, and the analogous alkali metal salts of the form M₂PdCl₄, may be prepared simply by reacting palladium(II) chloride with the appropriate alkali metal chloride in aqueous solution.^[1] Palladium(II) chloride is insoluble in water, whereas the product dissolves:

PdCl₂ + 2 MCl → M₂PdCl₄

Sodium tetrachloropalladate

Names
IUPAC name disodium tetrachloropalladium(2+)
Other names disodium tetrachloropalladate(II)
Identifiers
CAS Number	13820-53-6 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:139495
ChemSpider	21781887 Y
ECHA InfoCard	100.034.079
EC Number	237-502-6
PubChem CID	11000870
CompTox Dashboard (EPA)	DTXSID30893427
InChI InChI=1S/4ClH.2Na.Pd/h4*1H;;;/q;;;;2*+1;+6/p-4 Y Key: ABKQFSYGIHQQLS-UHFFFAOYSA-J Y InChI=1S/4ClH.2Na.Pd/h4*1H;;;/q;;;;2*+1;+6/p-4 Key: ABKQFSYGIHQQLS-UHFFFAOYSA-J
SMILES [Na+].[Na+].Cl[Pd+2](Cl)(Cl)Cl
Properties
Chemical formula	Cl4Na2Pd
Molar mass	294.20 g·mol−1
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H290, H301, H302, H317, H318, H319, H410
Precautionary statements	P234, P261, P264, P270, P272, P273, P280, P301+P310, P301+P312, P302+P352, P305+P351+P338, P310, P321, P330, P333+P313, P337+P313, P363, P390, P391, P404, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

The compound crystallizes from water as trihydrate (Na₂PdCl₄·3H₂O, reddish-brown powder with molar mass 348.22), which is the commercially available form.^[2]

This compound may further react with phosphines to give phosphine complexes of palladium.

An alternative method of preparing such phosphine complexes is to break up the coordination polymer of palladium(II) chloride into reactive, monomeric acetonitrile or benzonitrile complexes,^[3] followed by reaction with phosphines.^[1]