首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Sulfide oxidation by hydrogen peroxide catalyzed by iron complexes: two metal centers are better than one
Authors:Mekmouche Yasmina  Hummel Helga  Ho Raymond Y N  Que Lawrence  Schünemann Volker  Thomas Fabrice  Trautwein Alfred X  Lebrun Colette  Gorgy Karine  Leprêtre Jean-Claude  Collomb Marie-Noëlle  Deronzier Alain  Fontecave Marc  Ménage Stéphane
Institution:Laboratoire de Chimie et Biochimie, Centres Rédox Biologiques, Université Joseph Fourier/DBMS/CEA, UMR CNRS 5047 Grenoble, 17 rue des Martyrs, 38054 Grenoble Cédex 9, France.
Abstract:Peroxoiron species have been proposed to be involved in catalytic cycles of iron-dependent oxygenases and in some cases as the active intermediates during oxygen-transfer reactions. The catalytic properties of a mononuclear iron complex, Fe(II)(pb)(2)(CH(3)CN)(2)] (pb=(-)4,5-pinene-2,2'-bipyridine), have been compared to those of its related dinuclear analogue. Each system generates specific peroxo adducts, which are responsible for the oxidation of sulfides to sulfoxides. The dinuclear catalyst was found to be more reactive and (enantio)selective than its mononuclear counterpart, suggesting that a second metal site affords specific advantages for stereoselective catalysis. These results might help for the design of future enantioselective iron catalysts.
Keywords:
本文献已被 PubMed 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号