Muhammad Kalim Tahir

Ethyl 4-(3-butyrylthio-ureido)benzoate.

The title compound, C14H18N2O3S, crystallizes in the thioamide form with an intramolecular N—H⋯O hydrogen bond associated with the thiourea unit. With the benzoic acid and the butyrylthioureido units, the molecule consists of two planar building blocks connected by the common NH function adjacent to the aromatic ring. The interplanar angle is 33.38 (3)°. Molecules are connected in chains parallel to [110] by classical hydrogen bonds of the N—H⋯O type from the other NH group to the benzoate C=O of a neighboring molecule.

1-(1,3-Benzothia­zol-2-yl)-3-benzoyl­thio­urea

The title compound, C15H11N3OS2, was synthesized from benzoyl thiocyanate and 2-aminobenzothiazole in dry acetone. The thiourea group is in the thioamide form. The molecules are stabilized by two intermolecular C—H⋯S and C—H⋯O hydrogen bonds. Intramolecular N—H⋯O hydrogen bonding results in a pseudo-S(6) planar ring with dihedral angles of 11.23 and 11.91° with the benzothiazole ring system and the phenyl ring, respectively.

2-Propyl-4H-thia-zolo[3,2-a][1,3,5]triazine-4-thione.

In the title compound, C8H9N3S2, the n-propyl chain is disordered over two orientations (site-occupancy ratio = 0.522:0.478) and is roughly perpendicular to the fused thiazolotriazine system. The angle between the fused ring and the propyl chain is 83.6 (1)° [ 82.2 (1)° for the disordered chain]. The structure is stabilized by C—H⋯N hydrogen bonds.

N-(Thia-zol-2-yl)acetamide.

The title compound, C5H6N2OS, was synthesized from acetyl chloride and 2-aminothiazole in dry acetone. The asymmetric unit contains two molecules. The crystal structure is stabilized by N—H⋯N and C—H⋯O hydrogen bonds.