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A Five-Coordinate Phosphino/Acetate Iron(II) Scaffold That Binds N2, N2H2, N2H4, and NH3 in the Sixth Site

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journal contribution
posted on 21.11.2011 by Caroline T. Saouma, Curtis E. Moore, Arnold L. Rheingold, Jonas C. Peters
A family of iron(II) complexes that coordinate dinitrogen, diazene, hydrazine, and ammonia are presented. This series of complexes is unusual in that the complexes within it feature a common auxiliary ligand set and differ only by virtue of the nitrogenous NxHy ligand that occupies the sixth binding site. The ability of an iron center to bind N2, N2H2, N2H4, and NH3 is important to establish in the context of evaluating catalytic N2 reduction schemes that invoke these nitrogenous species. Such a scenario has been proposed as an iron-mediated, alternating reduction scheme within the cofactor of nitrogenase enzymes.

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