title: Synthesis and vibrational spectroscopy of (57)Fe-labeled models of [NiFe] hydrogenase: first direct observation of a nickel-iron interaction.
abstract: A new route to iron carbonyls has enabled synthesis of (57)Fe-labeled [NiFe] hydrogenase mimic (OC)3(57)Fe(pdt)Ni(dppe). Its study by nuclear resonance vibrational spectroscopy revealed Ni-(57)Fe vibrations, as confirmed by calculations. The modes are absent for [(OC)3(57)Fe(pdt)Ni(dppe)](+), which lacks Ni-(57)Fe bonding, underscoring the utility of the analyses in identifying metal-metal interactions.
authors.affiliation: Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA. schilter@illinois.edu.
authors.forename: David
authors.initials: D
authors.lastname: Schilter
authors.forename: Vladimir
authors.initials: V
authors.lastname: Pelmenschikov
authors.forename: Hongxin
authors.initials: H
authors.lastname: Wang
authors.forename: Florian
authors.initials: F
authors.lastname: Meier
authors.forename: Leland B
authors.initials: LB
authors.lastname: Gee
authors.forename: Yoshitaka
authors.initials: Y
authors.lastname: Yoda
authors.forename: Martin
authors.initials: M
authors.lastname: Kaupp
authors.forename: Thomas B
authors.initials: TB
authors.lastname: Rauchfuss
authors.forename: Stephen P
authors.initials: SP
authors.lastname: Cramer
mesh_terms: D056831:Coordination Complexes / Q000138:chemical synthesis* / Q000737:chemistry / Q000378:metabolism; D004578:Electron Spin Resonance Spectroscopy; D006864:Hydrogenase / Q000737:chemistry* / Q000378:metabolism; D007501:Iron / Q000737:chemistry*; D058085:Iron Compounds / Q000737:chemistry; D007503:Iron Isotopes / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D009532:Nickel / Q000737:chemistry*
chemical_list: D056831:Coordination Complexes; D058085:Iron Compounds; D007503:Iron Isotopes; C515100:iron pentacarbonyl; D009532:Nickel; D007501:Iron; C043296:nickel-iron hydrogenase; D006864:Hydrogenase