Binuclear iron butane-1,2-dithiolate compounds with cyclohexyldiphenylphosphine or dicyclohexylphenylphosphine: Synthetic, spectroscopic, crystal structural, and electrochemical studies

摘要

In this article, two new binuclear iron compounds Fe-2(CO)(5)PPh(C6H11)(2){mu-SCH2CH(CH2CH3)S} (2) and Fe-2(CO)(5)PPh2(C6H11){mu-SCH2CH(CH2CH3)S} (3), which can be regarded as the biomimics for the active site of FeFe-H(2)ases, have been synthesized by CO exchange of compound Fe-2(CO)(6){mu-SCH2CH(CH2CH3)S} (1) with cyclohexyldiph-enylphosphine or dicyclohexylphenylphosphine and their structures have been confirmed by spectroscopy, elemental analysis, and X-ray crystallography. They also exhibited good electrocatalytic activities for the generation of H-2.