Xiao-Yang Qiu

(E)-N′-(3-Chlorobenzylidene)isonicotinohydrazide

The molecule of the title compound, C13H9ClN3O, is roughly planar and displays a trans configuration with respect to the C=N double bond. The dihedral angle between the benzene and pyridine rings is 4.8 (3)degrees. The crystal structure is stabilized by intermolecular N-H center dot center dot center dot N hydrogen bonds.

(E)-2-Hydroxy-N′-(2-naphthylmethylene)benzohydrazide

The title compound, C18H14N2O2, is approximately planar and displays a trans configuration with respect to the C=N double bond. In the crystal structure, the molecules are linked through weak intermolecular O-H center dot center dot center dot O hydrogen bonds, forming a network structure.

(E)-2-Hydr­oxy-N′-[1-(4-methoxy­phen­yl)ethyl­idene]benzohydrazide

The title molecule, C16H16N2O3, adopts a trans configuration with respect to the C=N double bond. The dihedral angle between the two rings is 47.2 (3)degrees. The crystal structure is stabilized by intermolecular O-H center dot center dot center dot O hydrogen bonds, which link the molecules into a chain parallel to the b axis.

(E)-1-(4-chlorophenyl)-3-(4-fluorophenyl)prop-2-en-1-one

In the title compound, C15H10ClFO, the two benzene rings form a dihedral angle of 0.8 (4)°.

Synthesis and Characterization of Ni(II) Chelate with Schiff Base Ligands Derived from S‐hydrazyldithiocarbazate and p‐dibutylaminobenzaldehyde

A new nickel complex, bis[S‐hydrazyl‐p‐N‐(4‐dibutylaminophenyl)methylenedithiocarbazate]nickel(II) has been synthesized. It was characterized by elemental analysis and X‐ray crystallography. The crystal structure of the complex belongs to the triclinic system with the space group P‐1, a=8.920(2) Å, b=10.080(2) Å, c=12.763(3) Å, α=92.12(3)°, β=110.36(3)°, γ=115.03(3)°, U=951.6(4) Å3, Z=1, d=1.277 g cm−3.

(E)‐3‐(4‐Hydroxy­phen­yl)‐1‐(4‐methoxy­phen­yl)prop‐2‐en‐1‐one

In the title compound, C16H14O3, the dihedral angle between the two benzene rings is 25.8 (2)degrees. Molecules are linked into ribbons through O - H center dot center dot center dot O = C hydrogen bonds.

(E)-N '-(3-Bromobenzylidene)isonicotinohydrazide

The title compound, C13H10BrN3O, is roughly planar and displays a trans configuration with respect to the C=N double bond. The dihedral angle between the benzene and pyridine rings is 4.2 (3)degrees. The crystal structure is stabilized by intermolecular N-H center dot center dot center dot N hydrogen bonds.