Transition metals exhibit a high degree of reactivity with Schiff base ligands, resulting in the formation of stable coordination complexes. This reactivity is attributed to the ability of Schiff bases to donate lone pairs of electrons from their nitrogen atoms to the metal center, thereby establishing a robust coordination bond. Cobalt and nickel exhibit variable coordination numbers in their complexes, typically ranging from 4 to 6. In the context of octahedral coordination, both metals frequently exhibit a coordination number of 6, as evidenced by numerous studies . For instance, nickel (II) complexes with D2EHPA, Cyanex 272, and Aloxime 800 form NiL2 species, requiring additional water molecules to achieve octahedral coordination . A similar observation was made in the study by Santanilla et al. , where nickel complexes with Versatic 10 and a mixture of Cyanex 272 and Versatic 10 exhibited octahedral geometry.