Synthetic and structural studies of some trivalent lanthanide metal complexes of o -hydroxyacetophenone (N-benzoyl)glycyl hydrazone |
| |
Authors: | T R Rao and Genda Singh |
| |
Institution: | (1) Department of Chemistry, Faculty of Science, Banaras Hindu University, 221 005 Varanasi, India |
| |
Abstract: | o-Hydroxyacetophenone (N-benzoyl)glycyl hydrazone (o-HABzGH) forms complexes of the types M(o-HABzGH)Cl2(H2O)2]Cl and M(o-HABzGH-2H)OH(H2O)2], where M = Y(III), Gd(III), Tb(III) and Dy(III). The complexes have been characterized by elemental analyses, molar conductance,
magnetic susceptibility, infrared, electronic,1H NMR and13C NMR spectral techniques. The nephelauxetic ratio (β), covalency (δ), bonding parameter (b
1/2) and angular overlap parameter (η) have been calculated from Dy(III) complexes. Infrared and NMR spectral studies show thato-HABzGH acts as a neutral bidentate ligand in the adduct complexes and as a dinegative tridentate one in the neutral complexes.
A coordination number of six has been proposed for the metal ion in all the complexes. |
| |
Keywords: | Lanthanide metal complexes o-hydroxyacetophenone (N-benzoyl)glycyl hydrazone complexes hexa-coordinated Ln complexes |
本文献已被 SpringerLink 等数据库收录! |
|