56. “The Synthesis and Structure of Pentacarbonyl (5H-dipyrrolo[1,2-c: 2',1'-e]imidazol-5-yl)manganese”
    Burger, U.; Perret, C.; Bernardinelli, G.; Kündig, E. P.
    Helv. Chim. Acta 1984, 67, 2063-2067.

The dipyrroloimidazolyl ligand is found to bind the pentacarbonylmanganese group to its central ring via a carbon-metal σ-bond. This bonding mode differs greatly from that of known imidazole complexes and from the pentahapto mode encountered with the isoelectronic fluorenyl ligand. The X-ray structure of the title compound is reported.

DOI : 10.1002/hlca.19840670806 

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