Diimine-Supported Aluminum Hydride: A Versatile Hydride, Hydrogen Atom and Electron Donor †

Abstract

A novel α-diimine aluminum hydride, LAl(thf)H (L = [(2,6-i Pr2C6H3)NC(Me)]2), which exhibits versatile reactivity with various unsaturated substrates, including imines, hydrazine, azobenzene, aldehydes, and ketones. In these reactions, LAl(thf)H acts either as a hydride donor, hydrogen atom donor, and an electron donor, promoting corresponding dehydrocoupling, hydroalumination, and proton-coupled electron transfer (PCET) reactions. These results represent a new cooperative interactions with α-diimine ligands, which endows it with significant redox activity and provides a platform for studying metal-ligand cooperative electron transfer processes.