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1-(Thio­phen-2-yl)ethanone thio­semi­carbazone

The title compound, C7H9N3S2, crystallizes with two unique mol­ecules in the unit cell, both present as thio­semicarbazide tautomers. The mol­ecules differ principally in the dihedral angles between the thio­phene ring planes and the planes through the non-H atoms of the hydrazinecarbothio­amide units, viz. 9.80 (8)° for one mol­ecule and 19.37 (7)° for the other. The hydrazinecarbothio­amide units are reasonably planar, with r.m.s. deviations of 0.001Å for each of the mol­ecules. In the crystal, N-H...S hydrogen bonds link like mol­ecules into R22(8) inversion dimers. A three-dimensional network structure is generated by additional N-H...S hydrogen bonds and weak C-H...S contacts between the unique mol­ecules.


Auteur(s) : P. A. Gaye, A. Sy, A. D. Sarr, M. Gaye and C. Besnard
Pages : 01168
Année de publication : 2011
Revue : Acta Crystallographica E
N° de volume : E67
Type : Article
Mise en ligne par : GAYE Mohamed Lamine