Dibenzalacetone cocrystals

Pd2(dba)3 - CHCl. This is the most frequently employed precursor to a variety of chiral Pd(0) complexes. A chloroform molecule is cocrystallizing with the binuclear palladium moiety par unit. A number of variants with different cocrystaUized solvents are known and show similar reactivity with the chloroform adduct, which includes dba (dibenzalacetone) cocrystals [i.e., Pd2(dba)3-(dba)]. This species is often referred as Pd2(dba)4 or Pd(dba)2. In the presence of stronger ligands, such as phosphines, dba ligands in the complex are easily replaced to give new palladium species. In many cases, the released dibenzalacetone is difficult to remove and remains in the reaction mixture. Sometimes, the remaining dibenzalacetone works as an inhibitor thus, special attention must be paid to the dba. 

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