Small molecule activation with metal complexes supported by ligands with pendant arene moieties

Abstract

Multidentate ligands connected by terphenyl linkers have been employed to support mono and multimetallic complexes. The central arene of the terphenyl unit acts as a labile donor and coordinates in a variety of modes as a function of metal and oxidn. state. This arene can be non- innocent with respect to redox and H-transfer chem. Variants with catechol and hydroquinone moieties show multi- proton, multi- electron transfer chem. Addnl., pendant phosphine arms can reversibly dissoc., facilitating reactivity. The reactivity of these complexes for the activation of small mols. such as H_2, N_2, CO_2, O_2, and CO will be discussed.

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