Iron carbonyl cluster complexes with monophosphine ligands: synthesis,characterization, and crystal structure |
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| Authors: | Pei-Hua Zhao Wen-Tao Wang Yun-Feng Liu Ya-Qing Liu |
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| Affiliation: | 1. Research Center for Engineering Technology of Polymeric Composites of Shanxi Province, College of Materials Science and Engineering, North University of China, Taiyuan, 030051, People’s Republic of China
2. College of Public Health, Shanxi Medical University, Taiyuan, 030001, People’s Republic of China
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| Abstract: | Three new monophosphine-substituted iron carbonyl cluster complexes [(μ-PDT)Fe2(CO)5L] [(PDT = SCH2CH2CH2S, L = P(CH2Ph)3, 1; P(C6H11)3, 2; PPh2(PhMe-p), 3)], which can be regarded as active site mimics for [FeFe]-hydrogenase, have been prepared in 40–70 % yields by reactions of the parent complex (μ-PDT)Fe2(CO)6 (A) with monophosphine ligands in the presence of the decarbonylating agent Me3NO·2H2O. All three complexes were characterized by elemental analysis and spectroscopic techniques, as well as by X-ray crystallography for complex 1. The IR spectra of the complexes reveal that the electron-donating abilities of the different monophosphine ligands follow the order PPh2(PhMe-p) > P(C6H11)3 > P(CH2Ph)3. |
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