2-[2-(1H-Imidazol-3-ium-5-yl)Ethyl]-3-(Pyridin-2-yl)-2H-Imidazo[1,5-a]Pyridin-4-ium Bis-(Perchlorate)

Abstract

In the title molecular salt, C<inf>17</inf>H<inf>17</inf>N<inf>5</inf> +·2ClO<inf>4</inf>-, the dihedral angles between the fused-ring system and the pendant fiveand six-membered heterocyclic rings are 6.4 (2) and 41.29 (19)°, respectively. The O atoms of both perchlorate anions are disordered over two sets of sites with occupancy ratios of 0.614 (8):0.386 (8) and 0.591 (7):0.409 (7). An intramolecular C-H⋯N contact occurs in the cation. In the crystal, the components are linked by N-H⋯O and C-H⋯O hydrogen bonds and π-π stacking interactions [centroid-centroid separation = 3.642 (3) Å].