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

Angew Chem Int Ed Engl. 2019 Jul 15;58(29):9998-10002. doi: 10.1002/anie.201904968. Epub 2019 Jun 24.

Abstract

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.

Keywords: gallium; gallylene; iridium; pincer ligands.