The metal complexes were built and optimisation of their geometries was done at mm/H-F/6–31 g level of theory Figure 3, Figure 4 and Figure 5. Findings of these computed works are in good agreement with the experimental results. The selected bond lengths, bond angles of the ligand, bond angles of the complexes and their bond energies are given in Table 3a, Table 3b, Table 3c, Table 3d, Table 3e and Table 3f respectively. In the Co(II) and Ni(II) complexes, the metal ion may be bonded to either N(9) and N(46) or N(10) and N(45) nitrogen atoms of the azo group. When the metal ions coordinate with N (9) and N(46) of the azo group, they form a five membered ring. But when metal ions coordinate with N(10) and N(45) of the azo group, they form a six membered ring. In case of Co(II) and Ni(II) complexes, the total energies are found to be 106.177 kcal/mol and 109.170 kcal/mol respectively, when they form a five membered ring. The total energies of both the complexes have increased to 151.485 kcal/mol and 121.113 kcal/mol respectively, when they formed a six membered ring. From this energy difference it is concluded that both the metal atoms form a five membered ring with one of the azo nitrogen atoms.