Two new coordination compounds were obtained by the reaction of pyridine- 3,5-dicarboxylic acid ligand and CoII /NiII in the presence of 9-amino acridinium spacer in the solution phase. The titled compounds were characterized by elemental analyses, IR and 1H NMR spectroscopies. They are resulted from proton transfer between pyridine 3,5 dicarboxylic acid and 9-amino acridine and then adding of metallic salts such as cobaltII acetate and nickelII chloride lead to the formation of corresponding supramolecularly coordination compounds. The pyridin-3,5- dicarboxylic acid as a carboxylate function derivatives has attracted much interest in the coordination chemistry. Indeed, pyridine- 3,5- dicarboxylic acid and 9-amino acridine used here can form a good proton donoracceptor system. Many aspects of these two compounds such as their solution phase studies and single crystal X-ray diffraction remains to be investigated as we intend to do in the near future.

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