Dihydrogen Di-mu-chlorotetrakis(di-tert-butylphosphinoto)dipalladate (CAS# 386706-31-6) is an organometallic catalyst used for various reactions such as Heck-Matsuda arylation, cyclopalladation of cyclic imides, and the microwave-assissted Suzuki-Miyaura cross coupling of 6-chloropyridazinones.