A di-iron toluene-3,4-dithioate complex with monosubstituted 1,1′-bis(diphenylphosphino)ferrocene: preparation, characterization, and electrochemistry

• Published in: Molecular Crystals and Liquid Crystals Vol. 768; no. 3; pp. 1 - 8
• Main Authors: Liu, Xu-Feng, Li, Yu-Long
• Format: Journal Article
• Language: English
• Published: Philadelphia Taylor & Francis 11.02.2024; Taylor & Francis Ltd
• Subjects: [FeFe]-hydrogenases; Acetic acid; Chemical analysis; Di-iron toluene-3,4-dithiolate; dppf; Electrochemical analysis; Electrochemistry; Iron; NMR; Nuclear magnetic resonance; Protons; Refluxing; Single crystals; Toluene; X-ray crystallography; X-ray diffraction
• ISSN: 1542-1406; 1563-5287; 1527-1943
• DOI: 10.1080/15421406.2023.2249652

Herein, this work presents the preparation and characterization of a di-iron toluene-3,4-dithiolate complex with monosubstituted 1,1′-bis(diphenylphosphino)ferrocene (dppf). The reaction of complex [Fe 2 (CO) 6 {μ-SC 6 H 3 (CH 3 )S}] (1) with dppf in refluxing toluene gave the monosubstituted analog [Fe 2 (CO) 5 (κ 1 -dppf){μ-SC 6 H 3 (CH 3 )S}] (2) in 50% yield. Complex 2 was identified by elemental analysis, spectroscopies including FT-IR, 1 H, 31 P{ 1 H}, 13 C{ 1 H} NMR and single crystal X-ray diffraction analysis. Moreover, cyclic voltammetry revealed that complex 2 can reduce the protons to dihydrogen in the presence of an acetic acid as a proton source under the electrochemical conditions.