Different weak interactions in the crystals of three isomeric ( )- -methyl- --(nitrobenzylidene)-2-(thiophen-2-yl)acetohydrazides


The crystal structures of three isomeric (E)-N-methyl-N‘-(nitro­benzyl­idene)-2-(thio­phen-2-yl)acetohydrazides (formula C14H13N3O3S) are described, with the nitro group in ortho, meta and para positions in the benzene ring. In each crystal structure, mol­ecules are linked by various weak inter­actions (C-H...O and C-H...[pi] bonds, and [pi][pi] stacking), leading to three-dimensional networks in each case, but with little similarity between them.

Keywords: crystal structure; carbohydrazide; methyl­ation; weak hydrogen bonds.

Document Type: Research Article

DOI: https://doi.org/10.1107/S2056989016016856

Publication date: 1 de Novembro de 2016

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