The biologically active iron chelators 2-pyridylcarboxaldehyde isonicotinoylhydrazone, 2-pyridylcarboxaldehyde benzoylhydrazone monohydrate and 2-furaldehyde isonicotinoylhydrazone
Dr. Richardson et al., The biologically active iron chelators 2-pyridylcarboxaldehyde isonicotinoylhydrazone, 2-pyridylcarboxaldehyde benzoylhydrazone monohydrate and 2-furaldehyde isonicotinoylhydrazone, ACT CRYST C, 55, 1999, pp. 2102-2105
In the crystal structures of the respective title compounds, C12H10N4O, C13
H11N3O . H2O and C11K9N3O2, variations in the torsion angles of the aromati
c pyridyl and benzoyl groups are observed, and the disposition of the heter
ocyclic aldehyde is shown to be influenced by the ring size of this group.