TY - JOUR ID - 171377 TI - Cobalt (II) and Nickel (II) complexes with Schiff base derived from 9,10- phenanthrenquinone and 2-mercaptoaniline, synthesis and characterization JO - Eurasian Chemical Communications JA - ECC LA - en SN - 2717-0535 AU - Baqer Ibrahim, Riyam AU - T. Saad, Suad AD - Department of Chemistry, College of Science for Women, University of Babylon, Hilla, Iraq Y1 - 2023 PY - 2023 VL - 5 IS - 8 SP - 739 EP - 747 KW - 9,10 Phenanthrenquinone KW - Schiff base KW - 2-mercaptoaniline KW - Metal complexes DO - 10.22034/ecc.2023.390880.1612 N2 - In this article, a Schiff base ligand was produced with Co (II) and Ni (II) complexes. The Schiff base was prepared by the condensation reaction between 9,10-phenanthrynquinone and 2-mercaptoaniline in a ratio of 1:1, respectively, and the reaction time was  three hours. While the Co (II) and Ni (II) complexes were prepared by reacting the prepared Schiff base ligand with the metal chloride salts in ethanol also in 1:1 molar ratio of L:M and the synthesis time 12 hours. The produced ligand was characterized by infrared spectroscopy, UV-Vis, 1H-MNR, mass spectroscopy, and thermal gravimetric analysis, while the complexes were also characterized by UV-Vis spectroscopy, FTIR, conductivity measurements, atomic absorption, magnetic susceptibility, and thermal gravimetric analysis. The resulted complexes were green in color. Based on the results, the coordination between the metal ions and the Schiff base occurs through the imine group of the Schiff base ligand, the thione group and the remaining oxygen atom of 9,10-phenanthrynquinone. While the conductivity test shows that the two complexes are non-electrolyte in nature where ethanol was used as a solvent. The magnetic susceptibility values of Co and Ni (II) complexes were found to be 3.09 and 3.3 7 BM, respectively which indicate the presence of three unpaired electrons and two unpaired electrons in both complexes, respectively. These values also support the octahedral geometry of the higher spin complexes and confirm the sp3d2 metal hybridization in the complexes. The atomic absorption values of the complexes and the thermogravimetric analysis confirm that the proposed structure for the complexes is [M(L)ClH2O)]XH2O. UR - https://www.echemcom.com/article_171377.html L1 - https://www.echemcom.com/article_171377_adfeea6e3955990200e0891891888110.pdf ER -