Synthesis,characterization and electrochemistry of diiron 1,2-dithiolate complexes with a trans-cinnamate ester |
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| Authors: | Jiao He Fan Gao Hao Wu Zhong-Qing Jiang |
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| Institution: | 1. College of Chemistry and Environmental Engineering, Sichuan University of Science &2. Engineering, Zigong, China;3. School of Materials and Chemical Engineering, Ningbo University of Technology, Ningbo, China;4. Key Laboratory of ATMMT Ministry of Education, Department of Physics, Zhejiang Sci-Tech University, Hangzhou, China |
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| Abstract: | Three diiron 1,2-dithiolate complexes with a trans-cinnamate ester have been characterized. Esterification of Fe2(CO)6{μ-SCH2CH(CH2OH)S}] (1) with trans-cinnamic acid in the presence of N,N′-dicyclohexylcarbodiimide and 4-dimethylaminopyridine afforded Fe2(CO)6μ-SCH2CH(CH2O2CCH?=?CHPh)S}] (2) in 94% yield. Carbonyl substitution of 2 with a monophosphine ligand tris(4-fluorophenyl)phosphine or tris(2-methoxyphenyl)phosphine in the presence of Me3NO·2H2O resulted in formation of the corresponding monophosphine-substituted complexes Fe2(CO)5 {P(C6H4F-4)3}{µ-SCH2CH(CH2O2CCH?=?CHPh)S}] (3) and Fe2(CO)5{P (C6H4OCH3-2)3}{µ-SCH2CH(CH2O2CCH?=?CHPh)S}] (4) in 79% and 84% yields, respectively. Complexes 2-4 were structurally characterized by elemental analysis, spectroscopy and X-ray crystallography. Moreover, electrochemical properties of 2-4 were investigated. | |
| Keywords: | Diiron 1 2-dithiolate trans-cinnamic acid esterification carbonyl substitution electrochemistry |
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