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  • Title: Coordination behavior and bio-potent aspects of Ni(II) with 2-aminobenzamide and some amino acid mixed ligands--Part II: Synthesis, spectral, morphological, pharmacological and DNA interaction studies.
    Author: Dharmaraja J, Subbaraj P, Esakkidurai T, Shobana S.
    Journal: Spectrochim Acta A Mol Biomol Spectrosc; 2014 Nov 11; 132():604-14. PubMed ID: 24892541.
    Abstract:
    A series of novel bioactive mixed ligand Ni(II) complexes (1a-1d) have been synthesised by using 2-aminobenzamide (2AB) and some bio-relevant amino acid ligands. The synthesised Ni(II) complexes were structurally characterized by various physico-chemical and spectral studies. Elemental analysis and molar conductance values suggest that 1:1:1 stoichiometry with non-electrolytic nature. Based on the spectral studies, both the ligands act as bidentate and they chelate with Ni(II) ion via amino-NH2 and amido-O and deprotonated carboxylato-O and amino-NH2 atoms respectively to form a stable six, five membered chelate rings with mononuclear octahedral geometry. Thermal studies show the presence of coordinated water and acetate molecules in the coordination. The powder X-ray diffractogram and SEM pictograph imply that all the complexes have fine crystalline peaks with homogeneous surface morphology. In vitro antimicrobial and antioxidant studies indicate the complexes are more active than free 2-aminobenzamide ligand. The Ni(II)-2AB-gly/phe complexes (1a and 1d) show significant oxidative cleavage and DNA binding activities. Moreover, the 3D molecular modeling, analysis of the complexes has also been studied.
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