Synthesis, structure and electrochemical property of diphenylacetypene-substituted diiron azadithiolates as active site of Fe-only hydrogenases |
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Authors: | Gang Si Wen-Guang Wang Jie Ding Xu-Feng Shan Yao-Peng Zhao Chen-Ho Tung Ming Xu |
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Affiliation: | Laboratory of Organic Optoelectronic Functional Materials and Molecular Engineering, Technical Institute of Physics and Chemistry & Graduate University, The Chinese Academy of Sciences, Beijing 100080, PR China |
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Abstract: | The model complexes 1-3 of functionalized azadithiolate (ADT)-bridged Fe-only hydrogenases, [Fe2(Co)6(μ-ADT)C6H4CCR] [R = C6H4NO2-4 (1), C6H5 (2), C6H4OCH3-4 (3)] have been synthesized in high yields under mild conditions by using Sonogashira reaction. Spectroscopic study and X-ray crystal structural analysis of 1 demonstrate that the model complexes retain the butterfly structure of 2Fe2S model analogues. The intermolecular C-H?O, C-H?π hydrogen bonding and π-π interactions play important roles in molecular packing of 1. In the presence of HOAc, complex 1 features the catalytic electrochemical proton reduction. |
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