Synthesis and spectral characteristics of the combined ligand copper complex with proline and corazole

Synthesis of the combined ligand complex of copper(II) prolinate bis(1,5-pentamethylenetetrazole) [Cu(PMT)2](Pro)2 was carried out. The product is interesting as a biologically active compound. It is obtained by reaction of copper carbonate with proline followed by further reaction with corazole. The composition and structure of the complex were confirmed by elemental analysis and data of UV, IR, and 1H NMR spectroscopy. The complex was characterized in detail by the method of circular optical dichroism.