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Title: Proton and Electron Additions to Iron (II) Dinitrogen Complexes Containing Pendant Amines

We describe a single site cis-(H)FeII-N2 complex, generated by the protonation of an iron-carbon bond of a "reduced" iron complex, that models key aspects of proposed protonated intermediates of the E4 state of nitrogenase. The influence on N2 binding from the addition of protons to the pendant amine sites in the second coordination sphere is described. Furthermore, the addition of electrons to the protonated complexes results in H2 loss. The mechanism of H2 loss is explored to draw a parallel to the origin of H2 loss (homolytic or heterolytic) and the nature of N2 coordination in intermediates of the E4 state of nitrogenase.
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Publication Date:
OSTI Identifier:
Report Number(s):
47453; KC0307010
DOE Contract Number:
Resource Type:
Journal Article
Resource Relation:
Journal Name: Organometallics, 33(6):1333-1336
Research Org:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
Sponsoring Org:
Country of Publication:
United States
Iron; Dinitrogen; ammonia; nitrogenase; catalyst; Environmental Molecular Sciences Laboratory