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  • Title: Synthesis, spectroscopy, and thermal study of uranyl unsymmetrical Schiff base complexes.
    Author: Kianfar AH, Dostani M.
    Journal: Spectrochim Acta A Mol Biomol Spectrosc; 2011 Nov; 82(1):69-73. PubMed ID: 21856221.
    Abstract:
    The new uranyl complexes with tetradentate unsymmetrical N(2)O(2) Schiff base ligands were synthesized and characterized by IR, UV-vis, NMR and elemental analysis. The DMF solvent is coordinated to uranyl complexes. The thermogravimetry (TG) and differential thermoanalysis (DTA) of the uranyl complexes were carried out in the range of 20-700°C. The UO(2)L(1) complex was decomposed in two and the others were decomposed in three stages. Up to 100°C, the coordinated solvent was released then the Schiff base ligands were decomposed in one or two steps. Decomposition of synthesized complexes is related to the Schiff base characteristics. The thermal decomposition reaction is first order for the studied complexes.
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