Nature employs polynuclear metalloenzymes to effect multi-electron redox processes. In particular, the majority of biological nitrogen activation occurs by nitrogenase, whose catalytic center features mulitnuclear iron or bimetallic iron/molybdenum or iron/vanadium-containing clusters.  Previous work in the Betley group has developed homo�and hetero-metallic trinuclear complexes of first row transition metals that have the ability to effect cooperative, multi-electron small molecule reductions. Synthetic efforts toward the construction of bimetallic heterotrinuclear complexes with metal compositions found in nitrogenase active sites (Fe, Mo, V) are described herein. Characterization of the resultant compounds by NMR spectroscopy, X-ray crystallography, M�ssbauer spectroscopy, magnetometry, and XRF will be presented.

Synthesis and characterization of bimetallic trinuclear early/late transition metal complexes

248th National Meeting (2014)

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