Synthesis and Mssbauer characterization of octahedral iron(II) carbonyl complexes FeI2(CO)3L and FeI2(CO)2L2: developing models of the [Fe]-H(2)ase active site. Academic Article uri icon


  • A series of mono- and disubstituted complexes, FeI(2)(CO)(x)L(4-x), x = 2 or 3, is conveniently accessed from simple mixing of N-heterocyclic carbenes, phosphines, and aromatic amines with FeI(2)(CO)(4), first reported by Hieber in 1928. The highly light sensitive complexes yield to crystallization and X-ray diffraction studies for six complexes showing them to be rudimentary structural models of the monoiron hydrogenase, [Fe]-H(2)ase or Hmd, active site in native (Fe(II)(CO)(2)) or CO-inhibited (Fe(II)(CO)(3)) states. Diatomic ligand (nu(CO)) vibrational and Mossbauer spectroscopies are related to those reported for the Hmd active site. The importance of a serial approach for relating such parameters in model compounds to low spin Fe(II) in the diverse ligation of enzyme active sites is stressed.

published proceedings

  • Inorg Chem

altmetric score

  • 3

author list (cited authors)

  • Li, B., Liu, T., Popescu, C. V., Bilko, A., & Darensbourg, M. Y.

citation count

  • 73

complete list of authors

  • Li, Bin||Liu, Tianbiao||Popescu, Codrina V||Bilko, Andrey||Darensbourg, Marcetta Y

publication date

  • December 2009