Sodium tetrachloropalladate

Sodium tetrachloropalladate

Names
IUPAC name disodium tetrachloropalladium(2+)
Identifiers
CAS Number	13820-53-6
ChemSpider	21781887
Jmol interactive 3D	Image
InChI InChI=1S/4ClH.2Na.Pd/h4*1H;;;/q;;;;2*+1;+6/p-4 Key: ABKQFSYGIHQQLS-UHFFFAOYSA-J 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
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

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

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]

References

1. Daniele Choueiry and Ei-ichi Negishi (2002). "II.2.3 Pd(0) and Pd(II) Complexes Containing Phosphorus and Other Group 15 Atom Ligands". In Ei-ichi Negishi. Handbook of Organopalladium Chemistry for Organic Synthesis (Google Books excerpt). John Wiley & Sons, Inc. ISBN 0-471-31506-0.
2. The compound's page in Strem Chemicals catalog
3. Gordon K. Anderson, Minren Lin (1990). "Bis(Benzonitrile)Dichloro Complexes of Palladium and Platinum". Inorganic Syntheses 28: 60–63. doi:10.1002/9780470132593.ch13.