Abstract: A novel macrocyclic ligand, 2,5,7,10-tetraaza-1,6(1,3)-dibenzenacyclodecaphane-3,4,8,9-tetraone (TF), was synthesized via solid-state microwave-assisted condensation of oxalic acid with m-phenylenediamine. Upon reaction with selected divalent transition metal ions, the ligand formed stable coordination complexes of the general formula [M(TF)₂Cl₂], where M = Cu, Co, or Zn. The structures of the ligand and its complexes were comprehensively characterized by infrared (IR) and electronic (UV-Vis) spectroscopy, ¹H and ¹³C NMR spectroscopy, molar conductance measurements, metal content analysis, and magnetic susceptibility measurements. Spectral and magnetic data support the formation of octahedral coordination geometries around the central metal ions in all synthesized complexes, with the TF ligand acting as a tetradentate donor.
Chemical Problems; 2026; V. 24(2); p. 262-268
MICROWAVE-ASSISTED SYNTHESIS OF A NOVEL LIGAND DERIVED FROM OXALIC ACID AND M-DIAMINE PHENYL AND ITS COMPLEXATION WITH SOME TRANSITION METALS
Department of New and Renewable Energies, College of Science, University of Mosul, Mosul, Iraq
Department of Public Health, College of Health Sciences, Hawler Medical University, Erbil, Kurdistan Region, Iraq
E-mail:
*falah.darweesh@hmu.edu.krd
Received Date: 2025-03-28
Accepted Date: 2025-05-28