title: Interrogating heterobimetallic co-catalytic responses for the electrocatalytic reduction of CO2using supramolecular assembly.
abstract: The use of hydrogen-bonding interactions to direct the non-covalent assembly of a heterobimetallic supramolecular system with Re and Mn bipyridine-based electrocatalysts is reported. Under catalytic conditions, the formation of hydrogen bonds generates a catalyst system which passes ∼10% more current than the individual current responses of the respective Re and Mn complexes for the reduction of CO2to CO and H2O. Infrared spectroelectrochemical studies indicate that the Re and Mn metal centers interact during the reduction mechanism, even forming heterobimetallic bonds under reducing conditions in the absence of substrate. These findings demonstrate that non-covalent assembly is a powerful method for generating new co-catalyst systems with greater reactivity and efficiency for transformations of interest.
authors.affiliation: University of California - San Diego, Department of Chemistry and Biochemistry, 9500 Gilman Drive 0358, La Jolla, CA 92023, USA. ckubiak@ucsd.edu.
authors.forename: Charles W
authors.initials: CW
authors.lastname: Machan
authors.affiliation: University of California - San Diego, Department of Chemistry and Biochemistry, 9500 Gilman Drive 0358, La Jolla, CA 92023, USA. ckubiak@ucsd.edu.
authors.forename: Clifford P
authors.initials: CP
authors.lastname: Kubiak