Preparation of bis(acetonitrile)dichloropalladium(II) (CH3CN)2PdCl2

A suspension of PdCl2 (1.00 g, 5.65 mmol) was heated to reflux in CH3CN (50 ml) with vigorous
stirring for 10 h under N2. Hot filtration of the resultant wine-red coloured solution through a ceolite pad into stirred petroleum spirit (40–60 oC) at room temperature afforded a yellow-orange solid.  Recrystallisation from CH3CN (100 ml), DCM (150 ml) and hexane (50 ml) gave (CH3CN)2PdCl2 as a bright yellow powdery solid.

Reference: Mathews, Christopher J.; Smith, Paul J.; Welton,Tom J. Mol. Catal. A Chem., 2003, 206, 77.