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Synthesis and characterization of some uranyl and zirconyl nitrilotriacetic acid (NTA) chelates
Faculty
Science
Year:
2005
Type of Publication:
Article
Pages:
1261-1269
Authors:
NOUR, EM, TELEB, SM, Elmosallamy, MAF, Shalaby, HM
DOI:
10.1080/00958970500038738
Journal:
JOURNAL OF COORDINATION CHEMISTRY TAYLOR \& FRANCIS LTD
Volume:
58
Research Area:
Chemistry
ISSN
ISI:000233020400001
Keywords :
nitrilotriacetic acid, zirconyl, uranyl, infrared spectra, thermal analysis
Abstract:
Four new complexes {[}UO2(HNTA)(H2O)] center dot 3H(2)O, Na{[}UO2(NTA)] center dot (H2O), {[}ZrO(HNTA) (H2O)] center dot 3H(2)O and Na{[}ZrO(NTA)] center dot H2O were obtained by the reactions of UO22+ and ZrO2+ salts with nitrilotriacetic acid ( NTA) dissolved in water and NaOH aqueous solution. Infrared spectra of the solid complexes have been obtained and assigned on the basis of C-s symmetry. Octahedral and polymeric chain structures are adopted for the uranyl and zirconyl NTA complexes, respectively. Thermogravimetric (TG) and differential thermal analysis (DTA) data are in accordance with the proposed structures and show that the complexes decompose to metal oxides.
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