Synthesis and Reactivity of Sterically Encumbered
Diazaferrocenes
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Abstract
Bulky
pyrrolyl ligands have been used for the synthesis of diazaferrocenes,
which have been characterized by various spectroscopic techniques,
including X-ray diffraction for <i>rac</i>-[{η<sup>5</sup>-2,3,5-(Me<sub>3</sub>C)<sub>3</sub>C<sub>4</sub>HN}<sub>2</sub>Fe]. Chemical oxidation of diazaferrocenes to the corresponding diazaferrocenium
cations has been accomplished with AgSbF<sub>6</sub>. In addition,
EPR and Mössbauer spectroscopic, electrochemical, and density
function theory (DFT) studies have provided a more detailed understanding
of the electronic structures of these complexes