title: 1-Methyl-3-(4-chloro-benzo-yl)imidazo[1,2-a]pyridin-1-ium-2-olate.
abstract: In the mol-ecule of the title compound, C(15)H(11)ClN(2)O(2), the nine-membered heterobicycle is approximately planar [largest deviation from least-squares plane = 0.012 (2) Å] and forms a dihedral angle of 51.14 (8)° with the plane of the 4-chloro-phenyl group. There is a non-classical intra-molecular hydrogen bond between the pyridine α-H atom and the O atom of the benzoyl group. The crystal structure is stabilized by weak C-H⋯O and C-H⋯Cl inter-actions involving the 'olate' O atom and the Cl atom attached to the benzoyl group as acceptors.
authors: Departament of Chemistry, Moscow State University, 119992 Moscow,  Russian Federation.
authors: Victor B
authors: VB
authors: Rybakov
authors: Eugene V
authors: EV
authors: Babaev