Fe-S complexes containing five-membered heterocycles: novel models for the active site of hydrogenases with unusual low reduction potential
Release Time:2019-03-10 Hits:
Indexed by: Journal Article
Date of Publication: 2007-02-28
Journal: DALTON TRANSACTIONS
Included Journals: PubMed、EI、SCIE
Issue: 8
Page Number: 896-902
ISSN: 1477-9226
Abstract: Three biomimetic 2Fe2S complexes [{(mu-SCH2)(2)NCH2(2-C4H3O)}](Fe-2(CO)(6)) (6a), [{(mu-SCH2)(2) NCH2(2-C4H3S)}](Fe-2(CO)(6)) (6b) and [{(mu-SCH2)(2)NCH2(5-Br-2-C4H2S)}Fe-2(CO)(6)] (6c) were prepared as models for the active site of Fe-only hydrogenase by the convergent process from [(mu-S-2)Fe-2(CO)(6)] and N,N-bis(hydromethyl)-2-furan and thiophene. The structures of these complexes were identified spectroscopically and crystallographically. The electrochemical behavior of the complexes 6a and 6c was unique as they showed catalytic proton reduction with a low reduction potential at -1.13 and -1.09 V vs Fc/Fc(+), respectively, in the presence of HClO4.