期刊
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
卷 128, 期 -, 页码 427-446出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2014.02.160
关键词
Amoxicillin trihydrate; Spectroscopic studies; Florescence studies; Antibacterial evaluation
类别
The metal complexes of Amoxicillin trihydrate with La(III), Ce(III), Sm(III) and Y(III) are synthesized with 1:1 (metal:Amox) molar ratio. The suggested formula structures of the complexes are based on the results of the elemental analyses, molar conductivity, (infrared, UV-visible and fluorescence) spectra, effective magnetic moment in Bohr magnetons, as well as the thermal analysis (TG), and characterized by X-ray powder diffraction (XRD) and scanning electron microscopy (SEM). The results obtained suggested that Amoxicillin reacted with metal ions as tridentate ligands, coordinating the metal ion through its amino, imino, and beta-lactamic carbonyl. The kinetic thermodynamic parameters such as: E-a, Delta H*, Delta S* and Delta G* were estimated from the DTG curves. (C) 2014 Elsevier B.V. All rights reserved.
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