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

Journal Article · Mon Mar 10 00:00:00 EDT 2014 · Organometallics, 33(6):1333-1336

DOI:https://doi.org/10.1021/om401089d· OSTI ID:1129308

Heiden, Zachariah M.; Chen, Shentan; Labios, Liezel AN; Bullock, R. Morris; Walter, Eric D.; Tyson, Elizabeth L.; Mock, Michael T.

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.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1129308
• Report Number(s): PNNL-SA-97307; 47453; KC0307010
• Journal Information: Organometallics, 33(6):1333-1336, Journal Name: Organometallics, 33(6):1333-1336
• Country of Publication: United States
• Language: English

Related Subjects

Iron
Dinitrogen
ammonia
nitrogenase
catalyst
Environmental Molecular Sciences Laboratory