Synthetic and structural aspects of various self assembled chiral complexes of amino acid derived ligands and their applications

Abstract

The thesis deals with the two reduced Schiff base ligands based on Lmethionine and used to synthesised various Ni (II), Cu(II), Zn(II) and Cd(II) complexes. In chapter 1 involves a general introduction of supramolecular chemistry, non-covalent interactions and amino acid derived ligand and their complexes. Chapter 2 and 3 consists of series of mono- (1), bi- (2-5), tri-nuclear Ni(II) (6-9) and Cu(II) (10-11) complexes based on (Salmet) ligand. All the complexes were characterized by analytical method including Single Crystal X-ray Crystallography. The interconversions in Ni(II) complexes were studied by the UV-Vis experiments and confirmed by colour change in the solution. In chapter 4, a set of Zn-coordination polymers (12-15) and Cu-coordination polymer (16-17) have been synthesized using the reduced Schiff base ligand (Pymeth). The metal exchange process from coordination polymers 14 to 18 has been demonstrated through a solid liquid interface and various analytical technique. In chapter 5, two Cd-coordination polymers (20-21) were synthesized using ligand (Pymeth) and characterized. Two different CdS nanopartical (CdS-1/2) were synthesised by thermolysis method and where coordination polymers used as a precursor. The photocatalytic activities of coordination polymers (20/21) and nanoparticles (CdS-1/2) were evaluated for dye degradation solution in the presence of visible light. The results showed that nanoparticles have a higher catalytic efficiency than coordination polymers and small size CdS nanoparticles show better result as compared to larger size. newline