Abstract
A series of lanthanide(III) complexes of the type [Ln(SAP)X2.2H2O], where Ln = La, Ce, Pr, Nd, Sm, Eu, Gd, Dy and Y; X = NO3 or CI, SAPH = salicylidene-2-aminopyridine, have been synthesised and characterized by elemental analyses, molar conductance, magnetic measurements, spectral (electronic, infrared, 1H NMR) and thermal studies. The elemental analyses indicate 1:1 (metal:ligand) stoichiometry for the complexes. The spectral studies show that the ligand acts as a monobasic tridentate ligand with the phenolic -CO, azomethine nitrogen and ring nitrogen as coordinating sites. The nitrate group is coordinated in a monodentate fashion. The ligand, metal salts and the complexes were screened for antibacterial and antifungal activities. It was found that the activity against Candida albicans of the ligand as well as the metal salts has significantly enhanced on complexation.
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