Abstract
The title molecular complex, C25H25BrF3N4+·C6H2N3O7−, crystallizes with two pairs of cations and anions in the asymmetric unit. While the orientations of the two cations are nearly parallel to one another, this is not so for the anions. The imidazonaphthyridine moiety is planar and the methylpiperidine group is approximately perpendicular to it and adopts an ideal chair conformation. The planes of the bromophenyl rings deviate from the planes of the imidazonaphthyridine moieties by 30.2 (2) and 22.6 (3)° in the two cations, making a marked difference in the overall conformation of the cations. The N—H⋯N hydrogen bond forms an intramolecular ring pattern S(7) in both cations. The anions and cations are connected through N—H⋯O, C—H⋯O and C—H⋯F hydrogen bonds.
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