Acta Crystallographica Section E

Volume 68, Part 3 (March 2012)

organic compounds

lh5415 scheme

Acta Cryst. (2012). E68, o691-o692 [ doi:10.1107/S1600536812005442 ]

1-(6-Chloro-1,3-benzothiazol-2-yl)hydrazine

H.-K. Fun, C. W. Ooi, B. K. Sarojini, B. J. Mohan and B. Narayana

Abstract: The asymmetric unit of the title compound, C₇H₆ClN₃S, consists of two crystallographically independent molecules (A and B). The dihedral angle between the benzothiazole ring system and the hydrazine group is 8.71 (6)° in molecule A and 7.16 (6)° in molecule B. The N-N-C-N and N-N-C-S torsion angles involving the hydrazine group are 170.89 (9) and -9.96 (13)°, respectively, in molecule A and 172.50 (9) and -7.43 (13)°, respectively, in molecule B. In the crystal, neighbouring molecules are connected via pairs of N-HN hydrogen bonds, generating R₂²(8) ring motifs, and are connected further by N-HN hydrogen bonds into sheets lying parallel to the ab plane. The crystal studied was an inversion twin, the refined ratio of the twin components being 0.50 (3):0.50 (3).


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