International Journal of Science and Research (IJSR)

International Journal of Science and Research (IJSR)
Since Year 2012 | Open Access | Fully Refereed | Peer Reviewed

ISSN: 2319-7064




Downloads: 3

Research Paper | Chemistry | Nigeria | Volume 11 Issue 1, January 2022


Synthesis and Characterization of Mixed Complexes of Co (II) and Fe (II)

Uche G. Nwokeke | Julius C. Ibe | Margaret Enedoh | Sylvester N. Ugariogu


Abstract: Mixed ligand complexes of Co (II) and Fe (II) with salicylic acid and nicotinamide were synthesized. The complexes were characterized by some standard methods. They were found to be soluble in all solvents. The following melting points were recorded; 202 o C, 320 o C, and 292 o C, for Fe (II) (sal) 2, Fe (II) (Nic) 2 and Fe (Sal/Nic) respectively. The rest are 162 o C, 316 o C and 196 o C for Co (Sal) 2, Co (Nic) 2 and Co (Sal/Nic) mixed ligand complex respectively. In the research work, it was found out that most of the complexes have high molar conductivity value, while some others have low molar conductivity value. The complexes with lower molar conductivity value are less soluble in solvents than the complexes with higher value. The FTIR spectra observed in all the complexes showed that the coordination of [Co (Nic) 2Cl2]and [Fe (Nic) 2 (H2O) 2] is between N of the amine group (NH2) and the metal of the complex. In [Co (Sal) 2 (H2O) 2] and [Fe (Sal) 2 (H2O) 2] complex; coordination occurred between O of C=O group and the metal M of the complex. And in [Fe (Sal/Nic) (H2O) 2] and [Co (Sal/Nic) (H2O) 2] mixed ligand complex, the coordination of the complex is between O of the salicylic acid, the metal M and N of the pyridine in nicotinamide. But in [Co (Sal/Nic) (H2O) 2] coordination occurred between the N of the amine group and the O from C=O of the carboxylic group in salicylic acid.


Keywords: Mixed Ligands, complexes, Co (II); Fe (II), nicotinamide, salicylic acid, [Co (Sal/Nic) (H2O) 2]


Edition: Volume 11 Issue 1, January 2022,


Pages: 968 - 978

Synthesis and Characterization of Mixed Complexes of Co (II) and Fe (II)


How to Cite this Article?

Uche G. Nwokeke, Julius C. Ibe, Margaret Enedoh, Sylvester N. Ugariogu, "Synthesis and Characterization of Mixed Complexes of Co (II) and Fe (II)", International Journal of Science and Research (IJSR), https://www.ijsr.net/get_abstract.php?paper_id=SR21816214151, Volume 11 Issue 1, January 2022, 968 - 978, #ijsrnet

How to Share this Article?

Enter Your Email Address




Similar Articles with Keyword 'Mixed Ligands'

Downloads: 96

Research Paper, Chemistry, Iraq, Volume 4 Issue 7, July 2015

Pages: 2337 - 2342

Synthesis, Characterization of Some Metal Complexes With Mixed Ligands Derived from Sulfamethoxazole and 4, 4-dimethyl-2, 2-bipyridyl

Mahasin F. Alias [3] | Maysoon M. Abdul Hassan | Sameaa J. Khammas [3]

Share this Article

Downloads: 128

Research Paper, Chemistry, India, Volume 4 Issue 8, August 2015

Pages: 1003 - 1009

Synthesis, Characterization and Antimicrobial Studies on Some Trivalent Lanthanide Metal Complexes with a Bidentate O, N Donor Mixed Ligands

V. D. Ingale | N. R. Dighore | V.G.Shinde | A. S. Rajbhoj | S. T. Gaikwad

Share this Article


Top