عنوان مقاله [English]
Copper(II) and cobalt(II) complexes with dipicolinic acid ligand have been synthesized by a novel and facile synthetic rout using amino acid L-lysine. Characterization, structural and colorimetric studies of synthesized complexes were carried out by single-crystal X-ray diffraction, elemental analyses, colorimetric analysis, thermal analysis and FT-IR, UV-Vis and diffuse reflectance spectroscopies. Results showed that copper(II) complex, has the polymeric structure of one-dimensional (1D) zigzag chains, whereas in the cobalt(II) complex, cobalt ions occupied two different octahedral positions. Dipicolinic acid ligands lie approximately on ab crystal planes and π-π interactions of pyridine rings formed 3-D networks. Results showed that amino acid did not participate in the structure of complexes and assist the formation of multi dimensional structures. Synthesized colored complexes have favorite color properties and high solubility in water and polar solvents due to carboxylate functional groups and the total net charge of complexes.