Stabilized Gallylene in a Pincer-Type Ligand: Synthesis, Structure, and Reactivity of PGaI P-Ir Complexes.

Iridium complexes having a pincer-type gallylene ligand were successfully synthesized utilizing bis(phosphino)terpyridine as an efficient scaffold for the Ir-GaI bond. The stabilization of the gallylene moiety by the pincer-type structure enabled various reactions at Ir with keeping the gallylene ligand intact, leading to unique structures and reactivities of PGaI P-Ir complexes.