2-Methoxyquinoline-3-carbaldehyde

Abstract

In the title compound, C11H9NO2, the quinoline ring system is essentially planar (r.m.s. deviation = 0.005 Å) and the meth-oxy and aldehyde groups are almost coplanar with it [N - C - O - C = 6.24 (19) and O - C - C - C = 0.3 (2)°]. In the crystal, molecules are linked by pairs of C - H⋯O hydrogen bonds, forming centrosymmetric R 22(10) dimers. The dimers are linked via π-π interactions involving the pyridine and benzene rings [centroid-centroid distance = 3.639 (1) Å].