organic compounds
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In the title compound, C19H15N3O2·H2O, the oxadiazole ring and the quinoline unit are almost coplanar, making a dihedral angle of 7.66 (8)°. The dihedral angle between the benzene ring and the quinoline system is 25.95 (8)° while that between the benzene and the oxadiazole rings is 18.88 (9)°. The water molecule is hydrogen bonded to an oxadiazole N atom and to the quinoline N atom. In the crystal, these units are linked via C—HO hydrogen bonds, forming two-dimensional networks lying parallel to the ab plane.