Synthesis, characterization and spectroscopy studying of some metal. complexes of a new Schiff base ligand; X-ray crystal structure, NMR and IR investigation of a new dodecahedron Cd(II) complex

摘要

Some new [Cd(H2L1)(NO3)]ClO4 (1), [Mn(H2L1)](ClO4)(2) (2), [Ni(H2L1)](ClO4)(2) (3) and [Cu(H2L1)](ClO4)(2) (4) complexes were prepared by the reaction of a Schiff base ligand and M (II) metal ions in equimolar ratios (M = Cd, Mn, Ni and Cu). The ligand H2L1 was synthesized by reaction of 2-[2-(3-formyl phenoxy)propoxy]benzaldehyde and ethanol amine and characterized by IR, H-1,C-13 NMR spectroscopy and elemental analysis. The synthesized complexes were characterized with IR and elemental analysis in all cases and H-1, C-13 NMR, and X-ray in the case of Cd(II) complex. The X-ray crystal structure of compound 1 showed that all nitrogen and oxygen atoms of Schiff base ligand (N2O4) and a molecule of nitrate with two donor oxygen atom have been coordinated to the metal ion and the Cd(II) ion is in an eight-coordinate environment that is best described as a distorted dodecahedron geometry. (C) 2016 Published by Elsevier B.V.