Heterobimetallic multi-site concerted proton electron transfer (MS-CPET) promotes coordination-induced O-H bond weakening.

ABSTRACT: Coordination-induced bond weakening of X-H bonds (X = O, N, C) has been observed in a number of low-valent transition metal compounds. However, the impact of an appended electron reservoir on the bond dissociation free energy of the O-H bond (BDFE_O-H) of a substrate bound to a d⁰ metal is poorly understood. To gain insight into the ability of separated deprotonation and oxidation sites to decrease the BDFE_O-H during proton-coupled electron transfer (PCET) reactions, a bimetallic system in which the sites of proton and electron loss are two distinct metal sites is described. Herein, the interconversion of tris(phosphinoamide) Zr/Co complexes HO-Zr(MesNPⁱPr₂)₃CoCN ^t Bu and O[triple bond, length as m-dash]Zr(M

SUBMITTER: Feresin J 

PROVIDER: S-EPMC12168920 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature