Synthesis and structure of 6-bromo-2-(di-eth-oxymeth-yl)-2-hy-droxy-3-phenyl-2,3-di-hydro-1H-imidazo[1,2-a]pyridin-4-ium chloride aceto-nitrile monosolvate.

In the title solvated mol-ecular salt, C18H22BrN2O3 +·Cl-·CH3CN, the imidazole ring is in envelope conformation and the pyridine and phenyl rings are oriented at a dihedral angle of 72.52 (5)°. In the crystal, O-H⋯Cl and N-H⋯Cl hydrogen bonds link the cations and anions into centrosymmetric tetra-mers enclosing R 2 4(12) loops. Short Br⋯Cl [3.2313 (4) Å] and O⋯Cl [3.0490 (10) Å] contacts are observed. A Hirshfeld surface analysis of the structure indicates that the most important contributions for the crystal packing are from H⋯H (52.4%), H⋯C/C⋯H (12.1%), H⋯Br/Br⋯H (11.0%) and H⋯Cl/Cl⋯H (10.2%) inter-actions.