International Science Community Association Research Journal of Chemical Sciences 2231-606X 12 1 2022 02 18 Synthesis, Characterization and antimicrobial activity of macrocyclic metal complexes of Ni(II) and Cd(II) 18 25 EN I.A. Ajayi 1 Industrial Unit, Chemistry Department, Faculty of Science, University of Ibadan, Nigeria O.B. Omolere 2 Industrial Unit, Chemistry Department, Faculty of Science, University of Ibadan, Nigeria Pachouri Manoj Kumar 1 Applied Science Department, Anand Engineering College, Keetham, Agra, 282007, India Mittal Pankaj 2 Applied Science Department, Anand Engineering College, Keetham, Agra, 282007, India Upadhyay Monika 1 Department of chemistry, University of Rajasthan, Jaipur 302004, India Singh R.V. 2 Department of chemistry, University of Rajasthan, Jaipur 302004, India Fahmi Nighat 3 Department of chemistry, University of Rajasthan, Jaipur 302004, India > Research Paper 2021 2 1 2022 02 18 New macrocyclic complexes derived from the template condensation reaction of bis(benzil)4-chloro1, 2-phenylenediamine(ML1) and bis(benzi1) 4-nuro1, 2-phenylenediamine (ML2) respectively with different diamines in the presence of transition metal chlorides. The complexes were characterized by elemental analysis and spectral techniques i.e. JR, UV­visible, IH-NMR and mass. Spectral studies show that the geometry around the metal center is octahedral. The Schiff base ligand and its metal complexes were tested against pathogenic bacteria and fungi. All the complexes exhibit antibacterial and antifungal activities against various organisms. Copyright@ International Science Community Association