pi-Stacked hydrogen-bonded chains of rings in 2,4-difluorobenzaldehyde isonicotinoylhydrazone and hydrogen-bonded sheets in 2,3-dichlorobenzaldehyde isonicotinoylhydrazone.
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.
Wardell
Solange M S V
SM
Fundação Oswaldo Cruz, Far Manguinhos, Rua Sizenando Nabuco, 100 Manguinhos, 21041-250 Rio de Janeiro, RJ, Brazil.
de Souza
Marcus V N
MV
Ferreira
Marcelle de L
Mde L
Vasconcelos
Thatyana R A
TR
Low
John N
JN
Glidewell
Christopher
C
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
C515327:2,3-dichlorobenzaldehyde isonicotinoylhydrazone; C515326:2,4-difluorobenzaldehyde isonicotinoylhydrazone; D000995:Antitubercular Agents; D006835:Hydrazones; D007539:Isonicotinic Acids