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Does a 1,1′-Diazaferrocene Exist?†
†
Heterocycles as Ligands, Part 3. This work was supported by the Deutsche Forschungsgemeinschaft and the Fonds der Chemischen Industrie. We thank Prof. P. Sartori for assistance. Part 2: [9].
Graphical Abstract
Yes and no could be the answer to the question posed in the title. Although it was not possible to detect the diazaferrocene 1, the complex 1 · 2 C4Me4NH was in fact isolated and characterized. It was formed according to reaction sequence (a).
). Number of refinement parameters 205, maximum residual electron density 0.23 e Å−3. Further details of the crystal structure investigation are available on request from the Fachinformationszentrum Energie, Physik, Mathematik GmbH, D-7514 Eggenstein-Leopoldshafen 2 (FRG), on quoting the depository number CSD-51 183, the names of the authors, and the full journal citation.
