3-{2-[2-(3-Hydroxybenzylidene)hydrazin-1-yl]-1,3-thiazol-4-yl}-2H-chromen-2-one hemihydrate

• Main Authors: Afsheen Arshad, Hasnah Osman, Kit Lam Chan, Jia Hao Goh, Hoong-Kun Fun
• Format: Article
• Language: English
• Published: International Union of Crystallography 2010-06-01
• Series: Acta Crystallographica Section E
• Online Access: http://scripts.iucr.org/cgi-bin/paper?S1600536810019653

In the title compound, C19H13N3O3S·0.5H2O, both organic molecules (A and B) exist in E configurations with respect to the acyclic C=N bond and have similar overall conformations. In molecule A, the essentially planar thiazole ring [maximum deviation = 0.010 (2) Å] is inclined at interplanar angles of 11.44 (10) and 32.50 (12)°, with the 2H-chromene ring system and the benzene ring, respectively. The equivalent values for molecule B are 0.002 (2) Å, 7.71 (9) and 12.51 (12)°. In the crystal structure, neighbouring molecules are interconnected into infinite layers lying parallel to (010) by O—H...O, O—H...N, N—H...O and C—H...O hydrogen bonds. Further stabilization of the crystal structure is provided by weak intermolecular C—H...π and π–π [centroid–centroid distance = 3.6380 (19) Å] interactions.