4.5 Article

Synthesis, characterization and electrochemical properties of diiron azadithiolate complexes Fe2[(μ-SCH2)2NCH2CCH](CO)5 L (L = CO or monophosphines)

期刊

POLYHEDRON
卷 196, 期 -, 页码 -

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.poly.2020.115007

关键词

Hydrogenase; Diiron azadithiolate complex; Phosphine; Electrochemistry; Crystal structure

资金

  1. National Natural Science Foundation of China [21501124]
  2. Sichuan Provincial Human Resource and Social Security Department, Sichuan University of Science Engineering [2019RCL41, y2019030, 201710622016]

向作者/读者索取更多资源

This study describes the synthesis and characterization of a diiron azadithiolate complex and its corresponding phosphine-substituted derivatives, which were found to be active catalysts for H-2 production under electrochemical conditions.
Diiron azadithiolate complexes are considered as important biomimetic models for the diiron subsite of [FeFe]-hydrogenases. Here, the diiron azadithiolate complex Fe-2[(mu-SCH2)(2)NCH2CCH](CO)(6) (1), produced by the condensation reaction of Fe-2[(mu-SCH2OH)(2)(CO)(6) and NH2CH2CCH, is described. Meanwhile, the corresponding phosphine-substituted diiron azadithiolate complexes Fe-2[(mu-SCH2)(2)NCH2CCH](CO)(5)L (2-6) = PPh3, P(C6H4-4-CH3)(3), P(C6H4-4-OCH3)(3), P(-2-C4H3O)(3), PPh2C6H11] have been successfully prepared by the reactions of Fe-2[(mu-SCH2OH)(2)(CO)(5)L and NH2CH2CCH. All the new complexes 1-6 were fully characterized by elemental analysis, IR, UV/Vis, NMR spectroscopy, and for 1, 3, 4, 5 and 6 by X-ray single-crystal diffraction analysis. In addition, complexes 1-6 are all found to be active catalysts for H-2 production under electrochemical conditions. (C) 2021 Elsevier Ltd. All rights reserved.

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