Journal
INORGANIC CHEMISTRY COMMUNICATIONS
Volume 101, Issue -, Pages 32-39Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.inoche.2019.01.005
Keywords
Ligand azo dye; Spectroscopy analysis; Molar conductance; Antibacterial activity
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The ligand azo dye (L) [disodium (7-hydroxyl-8-phenylazo-1,3-naphthalenedisulfonate)] and its complexes of the formula [M L(S) (caf)]; M = Cd(II), Ni(II), Cu(II) and Zn(II); S = sulfamate; Caf = caffeine are prepared and characterized by molar conductance, infrared, H-1, C-13, NMR, EPR,UV-visible and X-ray Powder Diffraction (XRD). Correlations of all spectroscopic data suggest that azo dye (L) acts as bidentate ligand with (NO) sites; the caffeine and sulfamate behave as a monodentate ligand with N9 and oxygen donor towards metal ions respectively. The molar conductance reveals that the new series of the metal complexes are non-electrolytes. The postulated tetrahedral structure of the obtained complexes is also confirmed by the spectroscopic data analysis. The antibacterial activity of the complexes was tested against pathogenic strains using agar disk diffusion method.
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