International Journal of Engineering and Information Systems (IJEAIS)   Year: 2018 | Volume: 2 | Issue: 8 | Page No.: 59-62 Kinetic and Mechanism of Complex Formation of Demi-Macrocycles of N2O2 with Cr (II) and Co (II) Ions Sameena Rasheed, Arvind Prasad Dwivedi, M. U. Khan, S.S. Parihar Abstract: All the kinetic measurements were carried out under pseudo first-order conditions 4,4,9.9-tetramethyle-5,5-diazonium deca-2,11 dione diperchlorate [amke+H2](ClO4)2] reacting with metal ions Cr(II), Fe(II) ions in aqueous solution at 250C. The pH ranges 6.97, 6.90 respectively. The pH analysed in forms of different reactivities for the various kind of species. The rate constant was determined for excellent yield 80% reaction. The complex complexation of are found to be first-order with concentrations of respect to three metal ions at least five fold excess of total concentrations ligand the protonated ligand species participate in formation of demi-macrocyclic complex formation. The mechanism was discussed proposed.