Synthesis and Characterization of Novel Tetradentate Macrocycle Ligand Type N4 (1,5,8,12 - tetraazacyclotetradecan – 6,7,13,14 -tetraone)and its Complexes with Co(II), Ni(II), Cu(II) and Zn(II). مجلة ديالى للبحوث الانسانية, Iraq, v. 1, n. 39, 2022. DOI: 10.57592/djhr.v1i39.2182. Disponível em: https://djhr.uodiyala.edu.iq/index.php/DJHR2022/article/view/2182. Acesso em: 2 2025.