Synthesis, characterization, biological activity, and QSAR studies of transition metal complexes derived from piperonylamine Schiff bases

A series of transition metal complexes of Co(II), Ni(II), Cu(II), and Zn(II) metal ions with various uninegative bidentate Schiff base ligands derived from condensation of piperonylamine and 2-hydroxy-1-naphthaldehyde/substituted salicylaldehyde derivatives were synthesized and were well characterized by different spectroscopic techniques (FT-IR, UV–Vis, NMR, fluorescence, mass, and ESR), molar conductance measurements, elemental analysis and by...