organic compounds
Open access
In the title compound, C13H14N4O2, which has approximate mirror symmetry, the dihedral angles between the triazole ring and the cyclopropane and pyridine rings are 87.1 (2) and 7.60 (9)°, respectively. In the crystal, inversion dimers linked by pairs of both C—HN and C—HO interactions generate R22(6) and R22(18) loops, respectively. Further C—HN interactions form R22(10) loops and link the dimers into [110] chains.
metal-organic compounds
Open access
The title compound, [Cd2Cl4(C18H14N4O)2], was obtained from the reaction of Cd(NO3)2·4H2O with 2-phenylpyridineketon picolinoyl hydrazone and sodium chloride. Each Cd2+ cation is coordinated by two N atoms and one O atom of the tridentate ligand and three chloride anions, forming a distorted CdNOCl3 octahedron. Each pair of adjacent metal cations is linked by two bridging chloride ligands, resulting in a dinuclear complex unit. The molecular conformation is stabilized by intramolecular N—HN and C—HO hydrogen bonds. In the crystal, molecules are linked by nonclassical C—HO and C—HCl hydrogen bonds into a three-dimensional network. In addition, π–π stacking interactions [centroid–centroid distances = 3.777 (2) and 3.631 (2) Å] contribute to the stabilization of the crystal packing.
data reports
Open access
The title Schiff base, C14H11NO3, crystallizes as a zwitterion (i.e. proton transfer from the carboxylic acid group to the imine N atom). The dihedral angle between the aromatic rings is 19.59 (6)° and an intramolecular N—HO hydrogen bond closes an S(6) ring. In the crystal, inversion dimers linked by pairs of O—HO hydrogen bonds generate R24(24) loops. The dimers are linked by C—HO interactions, generating (211) sheets.