synthesis, spectroscopy and x-ray crystallography structure of pyridine 4-carbaldehyde semicarbazone schiff base ligand

In this work, pyridine 4-carbaldehye semicarbazone schiff base ligand (hl) was synthesized with condention of pyridine 4-carbaldehyde and semicarbazide hydrochloride in reflux method. the hl was characterized using the chn elemental analysis, ft-ir, uv-vis, and 1h nmr spectroscopy. the single crystals of hl prepared and used for the x-ray crystallography. single-crystal x-ray diffraction revealed that, hl crystallized in a triclinic system with the space group p-1. the ft-ir spectra and x-ray crystallography results suggested that the hl ligand is in keto form.