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Updated: Apr 19, 2026

Syntheses, Crystallization, and Spectroscopic Characterization of 3,5-Lutidine N-Oxide Dehydrate
Published on: April 24, 2018
Crystal structure of 1,3-bis-(1,3-dioxoisoindolin-1-yl)urea dihydrate: a urea-based anion receptor
Felipe Medrano1, Sergio Lujano1, Carolina Godoy-Alcántar1
1Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001 Col., Chamilpa, CP 62209, Cuernavaca, Mexico.
Abstract:
The whole mol-ecule of the title compound, C17H10N4O5·2H2O, is generated by twofold rotation symmetry and it crystallized as a dihydrate. The planes of the phthalimide moieties and the urea unit are almost normal to one another, with a dihedral angle of 78.62 (9)°. In the crystal, mol-ecules are linked by N-H⋯O and O-H⋯O hydrogen bonds, forming a three-dimensional framework structure. The crystal packing also features C-H⋯O hydrogen bonds and slipped parallel π-π inter-actions [centroid-centroid distance = 3.6746 (15) Å] involving the benzene rings of neighbouring phthalimide moieties.
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