title: [FeFe] hydrogenase: protonation of {2Fe3S} systems and formation of super-reduced hydride states.
abstract: The synthesis and crystallographic characterization of a complex possessing a well-defined {2Fe3S(μ-H)} core gives access to a paramagnetic bridging hydride with retention of the core geometry. Chemistry of this 35-electron species within the confines of a thin-layer FTIR spectro-electrochemistry cell provides evidence for a unprecedented super-reduced Fe(I)(μ-H)Fe(I) intermediate.
authors: Energy Materials Laboratory, School of Chemistry, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ (UK).
authors: Aušra
authors: A
authors: Jablonskytė
authors: Joseph A
authors: JA
authors: Wright
authors: Shirley A
authors: SA
authors: Fairhurst
authors: Lee R
authors: LR
authors: Webster
authors: Christopher J
authors: CJ
authors: Pickett
mesh_terms: D005290:Ferric Compounds / Q000737:chemistry / Q000378:metabolism*; D006864:Hydrogenase / Q000737:chemistry / Q000378:metabolism*; D007506:Iron-Sulfur Proteins / Q000737:chemistry / Q000378:metabolism*; D008958:Models, Molecular; D008968:Molecular Conformation; D010084:Oxidation-Reduction; D011522:Protons; D013457:Sulfur Compounds / Q000737:chemistry / Q000378:metabolism*
chemical_list: D005290:Ferric Compounds; D007506:Iron-Sulfur Proteins; D011522:Protons; D013457:Sulfur Compounds; C118830:iron hydrogenase; D006864:Hydrogenase
keywords: density functional calculations; electrochemistry; enzyme models; hydrides; iron