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Research Paper | Chemistry | Nigeria | Volume 10 Issue 8, August 2021 | Popularity: 5.4 / 10
Chemical Synthesis and Microbial Evaluation of Iron (II) and Cobalt (II) Complexes of Schiff Base Dervived from ?-Hydroxynapthalene-1-Carbaldehyde Using 2-Aminoaniline and 2-Hydroxyaniline as the Aniline Di-Substituents
Ezenweke Linus Obi, Ojiako Eugenia Nonye, Esonwune Anacletus Anayochukwu, Olugbue Victor U.
Abstract: Chemical synthesis and microbial evaluation of Iron (II) and Cobalt (II) complexes of Schiff base derived from ?-hydroxynapthalene-1-carbaldehyde was carried out using 2-aminoaniline and 2-hydroxylaniline as the substituted aniline. The chemicals used for the synthesis and complexation were of analytical grade and were used as supplied without further purification. The infrared (IR), Ultraviolet Visible (UV-Vis) and Mass spectroscopic (MS) analysis were carried out on the half unit ligands (?LOA, ?LNA), Schiff bases (LOA, LNA) and their respective complexes (FeOcplx, FeNcplx for Iron (II) and CoOcplx, CoNcplx for Cobalt (II)). The UV-Vis results show double peaks in all the complexes except FeOcplx and ligands with singlets and LNA with triplet attributed to n??* and ? ??* transition. The IR absorption show characteristic behavior in the sense that, the OH group found in both the half unit ligands and Schiff base within the region (3262.959-3330.483) cm-1 were absent in the complexes due to the usage of carbonyl oxygen in complexation. Likewise the v (N-H) of primary amine detected in half unit ligands: ?LNA (3414.764cm-1) and ?LOA (3495.558cm-1) were also absent due to bonding process. The MS of the compounds show molecular ion (M+) peaks indicating the molecular weight of the various compounds confirming chelation. The metal complexes show greater antimicrobial activity on both the fungi and bacteria than the ligands.
Keywords: beta-hydroxynapthalene-1-carbaldehyde, 2-aminoaniline, 2-hydroxylaniline, Complexation
Edition: Volume 10 Issue 8, August 2021
Pages: 949 - 961
DOI: https://www.doi.org/10.21275/SR21803191119
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