Di-mu-chlorobis[5-chloro-2-[(4-chlorophenyl)(hydroxyimino)methyl]phenyl]palladium(II) dimer (CAS# 287410-78-0) is a catalyst used for cross-coupling reactions, such as the green preparation of biaryls via Suzuki Miyaura coupling reaction of aryl bromides and arylboronic acids, and the green preparation of ynones via Sonogashira cross-coupling between aryl iodides, carbon monoxide and terminal acetylenes.