Design, synthesis and characterization of a bicompartimental bisthiosemicarbazone ligand

In this work, we present the design and synthesis of the bisthiosemicarbazone ligand H₃L^Me by means of an iminic condensation reaction between 2-hydroxyisophthalaldehyde and 4-methyl-3-thiosemicarbazide. This ligand is bicompartimental, pentadentate [N₂S₂O] and trianionic. The presence of a spacer constituted by a phenol group facilitates the coordination of transition metal ions, giving rise to a great variety of structures. To confirm the purity of the ligand, different characterization techniques were employed, including elemental analysis, mass spectrometry, infrared spectroscopy, and nuclear magnetic resonance. The acquisition of suitable crystals of H₃L^Me allowed us to analyze its structure through X-ray diffraction studies.