8-{[3-(3-Meth­oxy­phen­yl)-1,2,4-oxa­diazol-5-yl]meth­oxy}quinoline monohydrate

In the title hydrate, C(19)H(15)N(3)O(3)·H(2)O, the three aromatic groups in the quinoline derivative are close to coplanar: the central oxa­diazole fragment makes dihedral angles of 15.7 (2)° with the benzene ring and 5.30 (14)° with the quinoline ring system. In the crystal, the organic mol­ecules are connected with water mol­ecules by pairs of O—H⋯N hydrogen bonds involving the quinoline and oxa­diazole N atoms. The mol­ecules form stacks along the a axis, neighboring mol­ecules within each stack being related by inversion and the shortest distance between the centroids of the oxa­diazole and pyridine rings being 3.500 (2) Å. Mol­ecules from neighboring stacks are linked by weak C—H⋯O hydrogen bonds, forming a three-dimensional structure.