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Citation: Ruilong WANG, Jinlong MAO, Guoxia JIN, Jianping MA, Haiying WANG, Jie QIN. 2-Cyanobenzyl-substituted [FeFe]-hydrogenase compounds: Preparation, characterization, and photocatalytic H2-production performance[J]. Chinese Journal of Inorganic Chemistry, ;2026, 42(4): 817-825. doi: 10.11862/CJIC.20250376 shu

2-Cyanobenzyl-substituted [FeFe]-hydrogenase compounds: Preparation, characterization, and photocatalytic H2-production performance

  • 1.

    College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China

  • 2.

    College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China

  • 3.

    School of Environmental Science, Nanjing Xiaozhuang University, Nanjing 211171, China

  • 4.

    State Key Laboratory of Coordination Chemistry, School of Chemistry, Nanjing University, Nanjing 210093, China

  • 5.

    School of Life Sciences and Medicine, Shandong University of Technology, Zibo, Shandong 255049, China

Figures(7)

  • Two [FeFe]-hydrogenase compounds with 2-cyanobenzyl groups, {Fe2[(SCH2CH3)(SR)](CO)6} (1 or 1′, which are the crystalline states from petroleum ether and dichloromethane solution, respectively) and {Fe2[(SCH2CH3)(SR)](CO)5(PPh3)} (2) (R=2-cyanobenzyl), were synthesized and characterized by infrared spectroscopy, UV-Vis spectroscopy, single-crystal diffraction, powder X-ray diffraction, etc. Their performances as photocatalysts for H2 production through water splitting were evaluated. The results showed that 316.8 μmol of H2 was produced on compound 1 after 3 h of illumination, with a catalytic efficiency of 25.1 μmol·mg-1·h-1 and a turnover number (TON) of 36.8. The replacement of carbonyl with PPh3 could significantly improve the catalytic performance of the complex, and 705.0 μmol of H2 was produced on 2 after 3 h of illumination, with a catalytic efficiency of 37.9 μmol·mg-1·h-1 and a TON of 81.8.
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