Title of article :
Crystal structures of the Schiff base derivatives (E)-N′-[(1H-indol-3-yl)methylidene]isonicotinohydrazide ethanol monosolvate and (E)-N-methyl-2-[1-(2-oxo-2H-chromen-3-yl)ethylidene]hydrazinecarbothioamide
Author/Authors :
Saranya, Sivaraj Department of Biotechnology - Dr. M.G.R. Educational and Research Institute University,India , Haribabu, Jebiti Department of Chemistry - National Institute of Technology, India , Bhuvanesh, Nattamai S. P. Department of Chemistry - Texas A & M University, USA , Karvembu, Ramasamy Department of Chemistry - National Institute of Technology, India , Gayathri, Dasararaju Centre of Advanced Study in Crystallography and Biophysics - University of Madras, India
Abstract :
The crystal structures of two title Schiff base derivatives, C15H12N4O·C2H6O (1·EtOH) and C13H13N3O2S (2), were determined at 110 and 100 K, respectively. In the crystal of compound 1·EtOH, the (E)-N′-[(1H-indol-3-yl)methylidene]isonicotinohydrazide and ethanol molecules are linked by O—H⋯O, N—H⋯O and N—H⋯N hydrogen bonds, forming a tape structure running along the b-axis direction. The tapes are weakly linked via a C—H⋯N interaction. In the crystal of compound 2, (E)-N-methyl-2-[1-(2-oxo-2H-chromen-3-yl)ethylidene]hydrazinecarbothioamide molecules are linked via N—H⋯O and C—H⋯O hydrogen bonds, forming a helical chain along the b-axis direction. The chains are further linked into a layer expanding parallel to (102) through C—H⋯S interactions.
Keywords :
crystal structure , hydrazinecarbothioamide , isonicotinohydrazide , Schiff base derivatives
Journal title :
Acta Crystallographica Section E: Crystallographic Communications
