A family of dinuclear tricarbonyl rhenium (I) complexes containing bridging 1,2-diazine ligand and halide anions as ancillary ligands and able to catalyze CO2 reduction is presented. Electrochemical studies show that the highest catalytic efficiency is obtained for the complex containing the 4,5-bipenthyl-pyridazine and iodide as ancillary halogen ligands. This complex gives rise to TOF=15 s 1 that clearly outperforms the values reported for the benchmark mononuclear Re(CO)3Cl-(bpy) (11.1 s 1 ). The role of the substituents on the pyridazine ligand and the nature of the bridging halide ligands on the catalytic activity have been deeply investigated through a systematic study on the structure-properties relationship to understand the improved catalytic efficiencies of this class of complexes.

Dinuclear Re(I) Complexes as New Electrocatalytic Systems for CO2 Reduction / E. Quartapelle Procopio, A. Boni, L. Veronese, M. Marcaccio, P. Mercandelli, G. Valenti, M. Panigati, F. Paolucci. - In: CHEMELECTROCHEM. - ISSN 2196-0216. - 8:11(2021), pp. 2065-2069. [10.1002/celc.202100486]

Dinuclear Re(I) Complexes as New Electrocatalytic Systems for CO2 Reduction

E. QUARTAPELLE PROCOPIO
Primo
;
L. Veronese
Membro del Collaboration Group
;
P. Mercandelli
Membro del Collaboration Group
;
M. Panigati
Penultimo
;
2021

Abstract

A family of dinuclear tricarbonyl rhenium (I) complexes containing bridging 1,2-diazine ligand and halide anions as ancillary ligands and able to catalyze CO2 reduction is presented. Electrochemical studies show that the highest catalytic efficiency is obtained for the complex containing the 4,5-bipenthyl-pyridazine and iodide as ancillary halogen ligands. This complex gives rise to TOF=15 s 1 that clearly outperforms the values reported for the benchmark mononuclear Re(CO)3Cl-(bpy) (11.1 s 1 ). The role of the substituents on the pyridazine ligand and the nature of the bridging halide ligands on the catalytic activity have been deeply investigated through a systematic study on the structure-properties relationship to understand the improved catalytic efficiencies of this class of complexes.
CO2 reduction; electrocatalysis; ligands; molecular electrochemistry; Re(I) tricarbonyl complexes
Settore CHIM/03 - Chimica Generale e Inorganica
Settore CHIM/02 - Chimica Fisica
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/851516
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