Journal of Chemical and Pharmaceutical Research

ABSTRACT Comparison of seismic velocities in mantle metals under mantle conditions with seismic data is the first step towards constraining mantle chemistry. The calculation, however, is uncertain due to lack of data on certain physical properties. The Grüneisen parameter ( γ ) is of much importance regarding to the physical properties of mantle metals, because it sets limitations on the thermo elastic properties of the lower mantle and core at different compression ratio.

Abstract Cu(II), Ni(II), Mn(II) and Co(II) complexes were synthesized with bis (salicylaldehyde)malonyldihydra zone a tetradentate ligand (L) and characterized by elemental analysis, molar conductance measurements, magnetic susceptibility, IR, electronic and EPR spectral studies. Metal(II) salts react with Schiff base ligand in 1:1 molar ratio. The ligand and its complexes are stable at room temperature and all ofthem are non hygroscopic also. The elemental analysis for carbon, hydrogen and nitrogen were performed by micro analytical methods. Apart from this, the geometry of the newly synthesized compounds has been explained based on their elemental analysis, molar conductivity and spectral data. The molar conductance measurements of all the complexes in DMF solution correspond to electrolytic nature for the complexes except Mn(II) complexes