名称:
                                Synthesis, crystal structure and electrocatalysis of 1,2-ene dithiolate bridged diiron carbonyl complexes in relevance to the active site of [FeFe]-hydrogenases
                             
                            
                                摘要:
                                A series of binuclear (FeFeI)-Fe-I complexes have been prepared by the treatment of N-heterocyclic 1,2-dithiols, such as, quinoxaline-6,7-dithiol (H(2)6,7-qdt), 2,3-diphenyl-6,7-quinoxaline dithiol (H(2)diph-6,7-qdt) and 2,1,3-benzothiadiazole-5,6-dithiol (H(2)btdt) with Fe-2(CO)(9) resulting in the formation of [Fe-2{mu-6,7-qdt}(CO)(6)] (1), [Fe-2{mu-diph-6,7-qdt}(CO)(6)] (2) and [Fe-2{mu-btdt}(CO)(6)] (3) respectively, that serve as model systems for the active site of [FeFe]-hydrogenase. These new complexes 1-3 have been characterized by IR, H-1, C-13, and P-31{H-1} NMR, mass spectroscopy, elemental analysis and single-crystal X-ray structure analysis. The electrochemistry of 1-3 was performed by cyclic voltammetry and the electrocatalytic activities of model complexes 2 and 3 toward proton reduction of a strong acid p-HOTs have been described. (C) 2012 Elsevier B. V. All rights reserved.