Synthesis and characterization of [FeFe]-hydrogenase models mediated by a 1,2,4-trithiolane derivative: Insight into molecular structures and electrochemical characteristics

摘要

In this report two diiron hexacarbonyl complexes containing sulphur-rich heterocycles have been prepared as [FeFe]-hydrogenase mimics. These two complexes are obtained from the reaction of Fe-3(CO)(12) with 3,11-dibenzyl-7,14,15-trithia-3,11-diazadispira[5.1.5(8).2(6)]pentadecane. They have been characterized by different spectroscopic techniques (H-1 and C-13(H-1) NMR, IR and MS) as well as X-ray diffraction analysis. Moreover, we have investigated the influence of the sulphur-rich heterocycles linker on the redax potentials of the complexes and their catalytic ability in the presence of acetic acid (AcOH) by applying cyclic voltammetry. (C) 2019 Elsevier Ltd. All rights reserved.