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Published Articles

Synthesis and Characterisation of Zinc (II) Complex of 1,10-Phenanthroline

Autors:   Ogbuagu Obiaku Efuru, Prof. Ogwuegbu M.O.C., Dr. Onyedika Gerald O., Akanazu Grace Onyekachi, Isemede Austin

Date:   Oct 26, 2021

Edition:   September 2021 Edition

Volume:  2

  Issue:  2

  Pages:  14 (142 - 152)


Stoichiometric addition of solutions of 1,10-Phenanthroline (phen) to metal salt was used to synthesize bis(1,10-phenanthroline) zinc (II) complex at room temperature, cream-coloured crystals were constituted when the metal salt-ligand mixture was stirred consistently for 30 minutes and left to stand at room temperature. Job’s method of continuous variation was used to ascertain the composition of Zn (II) complex with 1,10-Phenanthroline and 1:2 metal-ligand molar ratio was established. The maximum wavelength of absorption (λmax) for Zn (II) complex of 1,10-phenanthroline were deduced at 307 nm using a UV-Visible 2500PC Series spectrophotometer, and the infrared spectral studies using a FTIR-8400S Fourier Transform spectrophotometer showed absorption bands indicating active groups in the synthesized metal complex, the absorbance and absorptivity of the complex synthesized was obtained. The solubility profile of Zn (II) in various solvents was analyzed, it was deduced that Zn(II) phenanthroline complex was very soluble in dimethyl sulfoxide, methanol and ethanol, slightly soluble in butanol and water, insoluble in 2-metyl-2-propanol and petroleum ether. The melting point and molar

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