Synthesis and vibrational spectroscopy of (57)Fe-labeled models of [NiFe] hydrogenase: first direct observation of a nickel-iron interaction

Chem Commun (Camb). 2014 Nov 14;50(88):13469-72. doi: 10.1039/c4cc04572f.

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.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Coordination Complexes / chemical synthesis*
  • Coordination Complexes / chemistry
  • Coordination Complexes / metabolism
  • Electron Spin Resonance Spectroscopy
  • Hydrogenase / chemistry*
  • Hydrogenase / metabolism
  • Iron / chemistry*
  • Iron Compounds / chemistry
  • Iron Isotopes / chemistry
  • Magnetic Resonance Spectroscopy
  • Models, Molecular*
  • Nickel / chemistry*

Substances

  • Coordination Complexes
  • Iron Compounds
  • Iron Isotopes
  • iron pentacarbonyl
  • Nickel
  • Iron
  • nickel-iron hydrogenase
  • Hydrogenase