Citation: Xu-Feng LIU, Bo XU, Hang XU, Yu-Long LI. Diiron Butane-1, 2-dithiolate Complexes with Phosphine Ligands: Preparation, Crystal Structures, and Electrochemical Catalytic Performance[J]. Chinese Journal of Inorganic Chemistry, ;2022, 38(12): 2521-2529. doi: 10.11862/CJIC.2022.245 shu

Diiron Butane-1, 2-dithiolate Complexes with Phosphine Ligands: Preparation, Crystal Structures, and Electrochemical Catalytic Performance

Xu-Feng LIU ^1,, ,
Bo XU ² ,
Hang XU ² ,
Yu-Long LI ²

1.
School of Materials and Chemical Engineering, Ningbo University of Technology, Ningbo, Zhejiang 315211, China
2.
College of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Zigong, Sichuan 643000, China

Corresponding author: Xu-Feng LIU, nkxfliu@126.com
Received Date: 12 June 2022
Revised Date: 3 September 2022

Figures(8)

Treatment of the parent complex [Fe₂(CO)₆(μ-SCH₂CH(CH₂CH₃)S)] (1) with tri(2-furyl)phosphine, n-propyldiphenylphosphine, bis(diphenylphosphino)acetylene, or 1, 2-bis(diphenylphosphino)benzene and Me₃NO ∙ 2H₂O as the decarbonylating agent yielded the monosubstituted complexes [Fe₂(CO)₅(L)(μ-SCH₂CH(CH₂CH₃)S)] (L=P(2-C₄H₃O)₃, 2; Ph₂PCH₂CH₂CH₃, 3), bridging complex {[Fe₂(CO)₅(μ-SCH₂CH(CH₂CH₃)S)]₂(Ph₂PC≡CPPh₂)} (4), and chelating complex [Fe₂(CO)₄(κ²-(Ph₂P)₂(1, 2-C₆H₄))(μ-SCH₂CH(CH₂CH₃)S)] (5), respectively. Complexes 2-5 have been characterized by elemental analysis, IR, and ¹H (³¹P{¹H}) NMR spectroscopy, as well as confirmed by single crystal X-ray diffraction analysis. Moreover, the electrochemistry of complexes 2-5 has been studied, showing that these complexes can catalyze the reduction of proton to H₂ in the presence of a weak acid HOAc as a proton source.
- [FeFe]-hydrogenases,
- diiron butane-1, 2-dithiolate,
- crystal structure,
- electrocatalytic H₂ production
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