Phosphine-substituted diiron 1, 2-dithiolate complexes as the models for the active site of [FeFe]-hydrogenases. Issue 15 (3rd August 2019)

• Record Type: Journal Article
• Authors: Yan, Lin; He, Jiao; Liu, Xu-Feng; Li, Yu-Long; Jiang, Zhong-Qing; Wu, Hong-Ke
• Is Part Of: Journal of coordination chemistry. Volume 72:Issue 15(2019)
• Page Start: 2531
• Page End: 2543
• Publication Date: 2019-08-03
• Subjects: Diiron 1, 2-dithiolate -- [FeFe]-Hydrogenases -- monophosphine -- X-ray crystallography -- electrochemistry; Coordination compounds -- Periodicals; 541.2242
• DOI: 10.1080/00958972.2019.1665648
• Languages: English
• ISSNs: 0095-8972

Abstract

Abstract: In this article, five diiron 1, 2-dithiolate complexes containing phosphine ligands are reported. Treatment of complex [Fe2 (CO)6 ( μ -SCH2 CH2 S)] (1 ) with the phosphine ligands tris(4-methylphenyl)phosphine, tris(4-methoxyphenyl)phosphine, tris(3-chlorophenyl)phosphine, tris(3-methylphenyl)phosphine, or 2-(diphenylphosphino)biphenyl in the presence of Me3 NO·2H2 O as the decarbonylating agent afforded the target products [Fe2 (CO)5 (L)( μ -SCH2 CH2 S)] [L = P(4-C6 H4 CH3 )3, 2 ; P(4-C6 H4 OCH3 )3, 3 ; P(3-C6 H4 Cl)3, 4 ; P(3-C6 H4 CH3 )3, 5 ; Ph2 P(2-C6 H4 Ph), 6 ] in 80–93% yields. Complexes 2 –6 have been characterized by elemental analysis, spectroscopy, and X-ray crystallography. Additionally, the electrochemical properties were studied by cyclic voltammetry. Graphical Abstract: