Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9756959 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2005 | 7 Pages |
Abstract
Cerium(IV), Thorium(IV) and Uranyl(II) complexes with the ammonium salt of sulfasalazine drug (H2SSZ, HLâ) have been studied. The structures of the complexes were elucidated using elemental analysis, IR and mass spectroscopy and thermal analysis. The complexes were isolated in 1:1 and 1:2 (M:L) ratios. The solid monocomplexes (1:1) (M:H2SSZ) were isolated in the general formulae [UO2(L)(H2O)2]·2H2O and [M(L)(X)z(H2O)n]·yH2O (M = Ce(IV) and Th(IV) (X = NO3, z = 2, n = 2, y = 0-3)). The biscomplexes (1:2) (M:H2SSZ) solid chelates found to have the general formulae [UO2(HL)2]·2H2O and [M(L)2(H2O)2] (M = Ce(IV) and Th(IV)). The thermal decomposition of the complexes should be discussed in relation to structure, and the thermodynamic parameters of the decomposition stages were evaluated applying Coats-Redfern and Horwitz-Mitzger methods.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Gehad G. Mohamed, Ahmed A. Soliman, Mohamed A. El-Mawgood,