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Chitosan a useful natural polymer which was extracted from the naturally aboundant polymer Chitin has been further modified by reaction with cinnamoyl chloride and cinamoyl isothiocyanate to yield two derivatives with multiple chleating centers. These derivatives were found to be very efficient in chelating Cu,Ni,Co, Cr and Fe ions from their solutions. Different absorption isotherms have been investigated. The derivatives were charachterized by spectral tools. The thermal behavior was investigated by TGA analysis and the kinetic parameters of their thermal decomposition were calculated.

This book provides an overview in recent progress in the field of solvatochromism in new mixed-ligand copper(II) complexes containing the bidentate di-nitrogen ligands and bidentate di-oxygen ligands. Copper(II) complexes were prepared and characterized by elemental analysis, infrared, mass and ESR spectral data, magnetic and molar conductance measurements and thermal gravimetric analysis. From the investigation, the geometries of the complexes are square planar for perchlorate complexes, square pyramid or octahedral for the nitrate complexes and octahedral for the bromide complexes. Thermal...

This work, described, the ligands derived from the condensation of S- methyl dithiocarbazate with 5-acetyl-4-hydroxy-2H-1,3-thiazine-2,6(3H)-dione (AHTD) afforded the dibasic tridentate ONS Schiff base, H2L, ligand. The ligands were allowed to react with some transition metal ions, Ligands and their complexes have been characterized on the basis of elemental analyses, spectroscopy and thermal gravimetric analysis (TGA) as well as the magnetic susceptibility and molar conductivity measurements suggesting dibasic ONS tridentate donors. The proposed structures of complexes were geometrically...