2022. 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. 1, 39 (2022). DOI:https://doi.org/10.57592/djhr.v1i39.2182.