Abstract
In this paper, two diiron toluene-3,4-dithiolate complexes with tris(3-fluorophenyl)phosphine or tris(4-trifluoromethylphenyl)phosphine have been synthesized and characterized. Treatment of hexacarbonyl complex [Fe2(CO)6{{µ-SC6H3(CH3)S}}] (1) with one equivalent of tris(3-fluorophenyl)phosphine or tris(4-trifluoromethylphenyl)phosphine in the presence of Me3NO·2H2O as the oxidative agent afforded complexes [Fe2(CO)5{{P(3-C6H4F)3}}{{µ-SC6H3(CH3)S}}] (2) and [Fe2(CO)5{{P(4-C6H4CF3)3}}{{µ-SC6H3(CH3)S}}] (3) in 90% and 80% isolated yields, respectively. The new complexes obtained above have been characterized by elemental analysis, IR, NMR spectroscopy, and their structures have been further confirmed by single crystal X-ray diffraction analysis. In addition, electrochemical studies revealed that they can catalyze the reduction of protons to molecular H2 in the presence of a weak acid HOAc.
Graphic Abstract
Two diiron toluene-3,4-dithiolate complexes with tris(3-fluorophenyl)phosphine or tris(4-trifluoromethylphenyl)phosphine have been synthesized by carbonyl substitution and studied by elemental analysis, spectroscopy, X-ray diffraction analysis, and cyclic voltammogram.
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Acknowledgements
This research was supported by Zhejiang Provincial Natural Science Foundation of China under Grant LY19B020002, National Natural Science Foundation of China under Grant 21501124, Science & Technology Department of Sichuan Province under Grant 2018JY0235, Education Department of Sichuan Province under Grant 18ZA0337, and Sichuan University of Science & Engineering under Grant S201910622022.
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Yan, L., Yang, J., Liu, XF. et al. Diiron Toluene-3,4-dithiolate Complexes with Tris(3-fluorophenyl)phosphine or Tris(4-trifluoromethylphenyl)phosphine: Synthesis, Spectroscopy, X-Ray Crystal Structures, and Electrochemical Properties. J Chem Crystallogr 51, 183–190 (2021). https://doi.org/10.1007/s10870-020-00844-3
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DOI: https://doi.org/10.1007/s10870-020-00844-3