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The dicationic 2,2-biimidazolyl derivative 5 has been obtained from the imidazolium salt 3 and the carbene 4 in good yield. The presence of the carbene 4 and its unstable dimer 7 were detected by NMR in the reduction product of 5 with potassium. The crystal structure of 5·H 2 O is reported.

zeitschrift für naturforschung b

Nukleophile Aromatische Substitution an 2-Fluoroimidazolium-Ionen: Synthese und Kristallstruktur eines dikationischen 2,2-Biimidazolyl- Derivates [1] / Nucleophilic Aromatic Substitution at 2-Fluoroimidazolium Ions: Synthesis and Crystal Structure of a Dicationic 2,2′-Biimidazolyl Derivative [1]