title: Protonation studies of the new iron carbonyl cyanide trans-[Fe(CO)3(CN)2]2-: implications with respect to hydrogenases.
abstract: The new iron carbonyl cyanide trans-[Fe(CN)(2)(CO)(3)](2)(-), [2](2)(-), forms in high yield via photosubstitution of Fe(CO)(5) with 2 equiv of Et(4)NCN. Protonation of [2](2)(-) generated [HFe(CN)(2)(CO)(3)](-), [2H](-), the first H-Fe-CN-CO species. Further protonation gives dihydrogen. This simple system provides insights into hydrogen evolution by the hydrogenase enzymes, which also feature H-Fe-CN-CO centers.
authors.affiliation: School of Chemical Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.
authors.forename: Ajay
authors.initials: A
authors.lastname: Kayal
authors.forename: Thomas B
authors.initials: TB
authors.lastname: Rauchfuss
mesh_terms: D018360:Crystallography, X-Ray; D006859:Hydrogen / Q000737:chemistry*; D007202:Indicators and Reagents; D058085:Iron Compounds / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D011522:Protons; D013055:Spectrophotometry, Infrared
chemical_list: D007202:Indicators and Reagents; D058085:Iron Compounds; D011522:Protons; C482210:tricarbonyldicyanoferrate(0); D006859:Hydrogen