Synthesis and characterization of some novel copper(II) complexes with an optically active Betti base
摘要:
Novel Cu(II) complexes with racemic as well as optically pure 1-(alpha-amino benzyl)-2-napthol, commonly known as Betti base, and its derivative 1-(alpha-pyrrolidinyl benzyl)-2-napthol have been synthesized. The general composition of all the isolated complexes, as determined by elemental analysis, thermal analysis and FAB mass spectra, is found to be Cu(L-H)(2). The coordination of the ligand with metal has been confirmed by IR and ESR spectra of the complexes. The CD spectra of complexes with the S-form of the ligands exhibit a mirror image relationship with the CD spectra of the complexes with the corresponding R-form of the ligands. The Cu(II) complex with racemic Betti base has been characterized structurally. It crystallizes in the monoclinic space group P2(1)/c. The complexes display quasi reversible redox behavior due to the Cu(II)/Cu(I) reduction process. (C) 2012 Elsevier Ltd. All rights reserved.