title: pi-Stacked hydrogen-bonded chains of rings in 2,4-difluorobenzaldehyde isonicotinoylhydrazone and hydrogen-bonded sheets in 2,3-dichlorobenzaldehyde isonicotinoylhydrazone.
abstract: The difluorinated ring in 2,4-difluorobenzaldehyde isonicotinoylhydrazone, C13H9F2N3O, (I), is disordered over two sets of sites with unequal occupancy. The molecules of (I) are linked by a combination of N-H...O and C-H...O hydrogen bonds into chains of rings, which are linked into sheets by a single pi-pi stacking interaction. In 2,3-dichlorobenzaldehyde isonicotinoylhydrazone, C13H9Cl2N3O, (II), the molecules are linked by a combination of N-H...N, C-H...N and C-H...O hydrogen bonds into sheets of R(4)(4)(14) and R(4)(4)(26) rings.
authors.affiliation: Fundação Oswaldo Cruz, Far Manguinhos, Rua Sizenando Nabuco, 100 Manguinhos, 21041-250 Rio de Janeiro, RJ, Brazil.
authors.forename: Solange M S V
authors.initials: SM
authors.lastname: Wardell
authors.forename: Marcus V N
authors.initials: MV
authors.lastname: de Souza
authors.forename: Marcelle de L
authors.initials: Mde L
authors.lastname: Ferreira
authors.forename: Thatyana R A
authors.initials: TR
authors.lastname: Vasconcelos
authors.forename: John N
authors.initials: JN
authors.lastname: Low
authors.forename: Christopher
authors.initials: C
authors.lastname: Glidewell
mesh_terms: D000995:Antitubercular Agents / Q000737:chemistry; D006835:Hydrazones / Q000737:chemistry*; D006860:Hydrogen Bonding; D007539:Isonicotinic Acids / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation; D014961:X-Ray Diffraction
chemical_list: C515327:2,3-dichlorobenzaldehyde isonicotinoylhydrazone; C515326:2,4-difluorobenzaldehyde isonicotinoylhydrazone; D000995:Antitubercular Agents; D006835:Hydrazones; D007539:Isonicotinic Acids