Synthesis and vibrational spectroscopy of halotrichite and bilinite |
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| Authors: | Palmer Sara J Reddy B Jagannadha Frost Ray L |
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| Institution: | a Chemistry Discipline, Faculty of Science, Queensland University of Technology, GPO Box 2434, Brisbane, Queensland 4001, Australia |
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| Abstract: | The new uranyl complexes with tetradentate unsymmetrical N2O2 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 UO2L1 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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| Keywords: | Halotrichite Bilinite Iron NIR spectroscopy Infrared spectroscopy |
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