The Different Effects of Metal Ions on the Synthesis of Macroacyclic Compounds: X-ray Crystal Structure, Theoretical Studies, Antibacterial and Antifungal Activities

WOS: 000468545300010
In this work, we have been involved studying the synthesis of some new macroacyclic complexesI-VIII, so we tried to get propoesed results in all cases but in the case of compound I, according to X-ray crystal structure, the product is a protonated Schiff base. By the reaction of a 1 : 1 (metal : ligand) stoichiometry of two known Schiff base ligands, 1,2-bis(2-((2-hydroxy ethylimino)methyl)phenoxy)ethane (H2L1) or 1,3-bis(2-((2-hydroxyethylimino)methyl) phenoxy)propane (H2L2) and appropriate metal salts in methanol in the case of Ni2+, Cu2+ and Co2+, macroacyclic complexes were prepared. When using Mn2+ only protonated Schiff base ligands is the final product. All compounds were characterized by microanalysis and IR spectroscopy, whereas compound I was also characterized by single crystal X-ray. The X-ray structure of compound I showed that both protonated imines are neutralized by two perchlorate ions. Computational calculations of relevant complexes are done by using one of the hybrid density functional theories which are a B3LYP method with 6-31G(d) basis set in a vacuum. Also, the synthesized compounds were screened for their antibacterial activities against nine bacterial strains and showed antibacterial effects. These complexes also showed antifungal effects on two species of Candida.
Department of Chemical Engineering, Hamedan University of Technology; Payame Noor University
We are grateful to the Department of Chemical Engineering, Hamedan University of Technology and Payame Noor University for financial supports. Also, this research is made possible by TUBITAK ULAKBIM, High Performance and Grid Computing Center (TR-Grid e-Infrastructure).