tert-Butyl 3-(3-methyl-1-oxidopyridin-1-ium-2-yl)benzoate

Abstract

In the title compound, C17H19NO3, which was obtained by oxidation of the corresponding pyridine derivative, the dihedral angle between the benzene and the pyridine rings is 68.2 (1)°. In the crystal, C—H...O hydrogen bonds to carboxyl andN-oxide O-atom acceptors gives a cyclic dimer substructure with anR22(18) motif which is extended into a undulating sheet structure lying parallel to (100) through weak C—H...Ooxidehydrogen bonds. Also present are π–π ring interactions [ring centroid separation = 3.561 (2) Å].