Prior studies have established the potential for organopalladium complexes to undergo photochemical reactions (Scheme 2). Complexes featuring tri-or tetradentate ancillary ligands, such as PNP or PCP pincer ligands in independent studies by Ozerov and Goldberg or N4 ligands by Mirica. Photochemical Pd(II)-C scission in (bisphosphine)Pd complexes has also been observed, which occurred using visible light in cases of weaker metal-acyl bonds in work by Arndtsen while stronger Pd(II)-alkyl bonds required UV light. Recently, Harth and co-workers reported that Pd catalysts featuring a redox active α-diimine ligand were able to liberate free radicals during olefin polymerization upon irradiation with blue LEDs. This phenomenon was exploited to prepare block copolymers by light-induced switching from isomerizing coordination-insertion polymerization of 1-hexene in the dark to radical polymerization of an acrylate under visible light irradiation. Accessing mild, visible light-inducted photochemistry with organo-Pd complexes coordinated by privileged ligand classes would be desirable to more broadly exploit the utility of light-induced one-electron chemistry in Pd catalysis.