Acta Crystallographica Section C
Crystal Structure Communications
Volume 60, Part 11 (November 2004)
Acta Cryst. (2004). C60, o815-o817 [doi:10.1107/S0108270104023418]
2-Acetamido-4-p-tolyl-1,3-thiazole and 2-amino-4-p-tolyl-1,3-thiazolium chloride dihydrate
D. E. Lynch and I. McClenaghan
Abstract: The structures of 2-acetamido-4-tolyl-1,3-thiazole, C12H12N2OS, (I), and 2-amino-4-tolyl-1,3-thiazolium chloride dihydrate, C10H11N2S+·Cl-·2H2O, (II), reveal that both molecules are essentially planar, with the respective dihedral angles between the benzene and thiazole rings being 2.9 (1) and 10.39 (7)°. Compound (I) associates via a single N-H
O interaction to form a flat alternate-facing hydrogen-bonded chain [graph-set C
(4)]. Compound (II) packs with the hydrogen-bonding associations of the Cl atoms and the water molecules creating a convoluted hydrogen-bonded ribbon made up of five-membered donor-acceptor rings, involving three water O atoms (with associated H atoms) and two Cl atoms. The thiazolium rings form stacked columns, aligned in the same direction as the hydrogen-bonded ribbons, of alternate-facing molecules that are also involved in the hydrogen-bonding network, linking to the Cl atoms and one of the water molecules. Subsequently, each Cl atom is the hydrogen-bond acceptor for five separate O/N-H associations.
Formula: C12H12N2OS and C10H11N2S+·Cl-·2H2O
Online 22 October 2004
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