Synthesis, characterization and anti-bacterial activity of divalent transition metal complexes of hydrazine and trimesic acid

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Abstract

Transition metal complexes of trimesic acid and hydrazine mixed-ligands with a general formula M(Htma)(N 2 H 4 ) 2 , where, M = Mn, Co, Ni, Cu and Zn; H 3 tma = trimesic acid, have been prepared and characterized by elemental, structural, spectral and thermal analyses. For the complexes, the carboxylate ν asym and ν sym stretchings are observed at about 1626 and 1367 cm −1 respectively, with Δν between them of ∼260 cm −1 , showing the unidentate coordination of each carboxylate group. The hydrazine moieties are present as bridging bidentates. Electronic and EPR spectral studies suggest an octahedral geometry for the complexes. All these complexes show three steps of decomposition in TGA/DTA. SEM images of CuO and MnO residues obtained from the complexes show nano-sized clusters suggesting that the complexes may be used as precursors for nano-CuO and nano-MnO preparation. The antimicrobial activities of the prepared complexes, against four bacteria have been evaluated.

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Kumar, K., & Murugesan, S. (2018). Synthesis, characterization and anti-bacterial activity of divalent transition metal complexes of hydrazine and trimesic acid. Journal of Saudi Chemical Society, 22(1), 16–26. https://doi.org/10.1016/j.jscs.2017.05.012

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