Synthesis and Characterization of Transition Metal(II) Complexes of salicylaldehyde-2-furoylhydrazone

A novel ligand, salicylaldehyde-2-furoylhydrazone (H2L) and its complexes with Mn(II), Co(II), Ni(II), Cu(II), and Zn(II) have been synthesized and characterized by elemental analyses, magnetic susceptibility measurements, molar conductance, IR, 1H NMR, electronic and EPR spectra and thermal analyses. The spectral data show that the ligand (H2L) acts as a dibasic tridentate ligand towards the metal cations. The magnetic and spectral data indicate that the complexes of the type [ML·3H2O] (where M = Mn (II), Co(II) or Zn(II)) are octahedral while those of the type [ML·H2O] (where M = Ni(II) or Cu(II)) are square-planar.