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The N,N-Bis(salicylidene)-2-hydroxy-phenylmethanediamine (BSHPMD) was synthesized and characterized by IR, UV-Vis and 1 H NMR spectroscopic techniques. The single crystal X-ray diffraction studies reveal that the compound had a monoclinic crystal system with C2/c space group. The cation recognizing profile of the receptor BSHPMD was explored by UV-Vis and fluorescence spectroscopic methods. The receptor was found to recognize selectively Al 3+ and Zn 2+ ions over a panel of other metal ions such as

This paper reports the synthesis of 3-ethyl-5-methyl-2,6-diarylpiperidin-4-on-1-ium picrates (1–3). The compounds were characterized by spectral techniques and theoretical methods.

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N-4-Methylphenyl (2,4-dihydroxy acetophenylideneimine) (NMEPDHAPI) complexes of Co(II), Ni(II) and Cu(II) have been synthesized and characterized. A study on their electrochemical, fluorescence and biological behaviour have also been performed. The complexes have been characterized on account of metal estimation studies, conductance behaviour, magnetic property, IR, UV-visible, EPR(Liquid nitrogen temperature) spectral studies and thermal analysis. The 1:2 metal : ligand complex formation is authenticated from the analytical data. Based on the various studies, the Co(II) complex has been recommended for octahedral geometry and a square planar geometry has been prompted for Cu(II) and Ni(II) complexes. The electro chemical property of the complexes have been studied by cyclic voltammetry. The Schiff base and its complexes have been scrutinized against bacterial and fungal pathogens. The complexes have been found to be more active than the Schiff base towards most of the pathogens studied. Invitro cytotoxicity of the copper complex of NMEPDHAPI has been screened against breast cancer cell lines (MCF-7). The IC50 value recommend that the copper complex has notable cytotoxicity against breast cancer cell line (MCF-7).