AI Article Synopsis
- - DMSC (dinuclear metal synergistic catalysis) is a promising method to boost the efficiency of photocatalytic CO reduction, but designing effective dinuclear metal complexes has been challenging due to a lack of understanding of their microenvironment's impact on catalytic activity.
- - A new dinuclear cobalt complex with a planar structure has been developed, demonstrating exceptional catalytic performance for converting CO, achieving turnover numbers (TON) and turnover frequencies (TOF) that are significantly higher than those of a corresponding single-metal complex.
- - The enhanced activity of this dinuclear cobalt complex is attributed to an indirect DMSC effect between the two cobalt ions, facilitating an efficient two-electron transfer process and improved mass transfer, all supported by its unique planar design
Article Abstract
Dinuclear metal synergistic catalysis (DMSC) has been proved an effective approach to enhance catalytic efficiency in photocatalytic CO reduction reaction, while it remains challenge to design dinuclear metal complexes that can show DMSC effect. The main reason is that the influence of the microenvironment around dinuclear metal centres on catalytic activity has not been well recognized and revealed. Herein, we report a dinuclear cobalt complex featuring a planar structure, which displays outstanding catalytic efficiency for photochemical CO-to-CO conversion. The turnover number (TON) and turnover frequency (TOF) values reach as high as 14457 and 0.40 s respectively, 8.6 times higher than those of the corresponding mononuclear cobalt complex. Control experiments and theoretical calculations revealed that the enhanced catalytic efficiency of the dinuclear cobalt complex is due to the indirect DMSC effect between two Co ions, energetically feasible one step two-electron transfer process by Co intermediate to afford Co (CO ) intermediate and fast mass transfer closely related with the planar structure.
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| http://dx.doi.org/10.1002/anie.202411639 | DOI Listing |
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