A current frontier area in organometallic catalysis is cooperative activity between two distinct metal centers in order to foster transformations not possible otherwise.1 Most systems developed to date feature bulky ligands in order to stabilize heterobimetallic edifices, but this prevents substrates to bind across the two metals, which could explain why catalytic applications of heterobimetallic complexes are limited at the moment.2 Surface OrganoMetallic Chemistry (SOMC) allows the isolation of highly unsaturated organometallic species featuring unique reactivity, and is an attractive approach to overcome this limitation. In this presentation we will describe our latest results focused on the development of new modular synthetic approaches to yield well-defined heterobimetallic species featuring metal-metal bonds in solution and supported at the surface of silica materials using a SOMC approach. These original supported dual-atom species exhibit drastically enhanced catalytic performances in H/D exchange reactions with respect to (i) monometallic analogues as well as (ii) homogeneous systems and promote deuteration of arenes with excellent productivity under mild conditions (25°C, subatmospheric D2 pressure) without any additives.

Metal-metal synergy in silica supported dual-atom isolated sites for catalytic H/D exchange reactions

ACS Spring Meeting 2021

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