6991. Palladium Diacetate

Nomenclature

CAS number: 19807-27-3
Acetic acid palladium salt; bis(acetato)palladium; diacetatopalladium(II); palladium(II) acetate.
C4H6O4Pd; mol wt 224.51.
C 21.40%, H 2.69%, O 28.51%, Pd 47.40%.
(CH3COO)2Pd.

Description and references

Prepn from palladium sponge or palladium nitrate and glacial acetic acid: Morehouse et al., Chem. Ind. (London) 1964, 544; Stephenson et al., J. Chem. Soc. 1965, 3632; from hydrated palladium oxide and acetic acid: Hausman et al., FR 1403398 corresp to US 3318891 (1965, 1967 to Engelhard). Crystal structure of trimeric palladium acetate: Skapski, Smart, Chem. Commun. 1970, 658.

Properties

Orange-brown crystals; mp 205° (dec). Shown to be trimeric by osmometric determn of mol wt in benzene (37°); monomeric by ebullioscopic measurement in benzene (80°). Crystals are trimeric. Sol in chloroform, methylene dichloride, acetone, acetonitrile, diethyl ether; sol with dec in aq HCl, aq KI solutions. Insol in water, aq NaCl, NaNO3, NaOAc solns, petroleum, alcohols. Dec when warmed with alcohols.

Use

Catalyst.