Some new Cu(II) complexes containing O,N-donor Schiff base ligands derived from 4-aminoantipyrine: synthesis, characterization, crystal structure and substitution effect on antimicrobial activity

A new series of mononuclear Cu(II) complexes, [Cu(L1)2]: C1, [Cu(L2)2]: C2, [Cu(L3)2]: C3 and [Cu(L4)2]: C4, with bis-O,N-bidentate Schiff base ligands (HL1: (E)-4-[(2-hydroxy-5-bromobenzylidene)am...