Complexation of uranium by 2-(2-thiazolylazo)-4-methoxyphenol and 2-(2-thiazolylazo)-5-methoxyphenol.
A comparative study has been made of the complexation of uranium(VI) by 2-(2-thiazolyl)-4-methoxyphenol (TAMH) and 2-(2-thiazolylazo)-5-methoxyphenol(TAMR). The complexes are less stable and have lower molar absorptivities than the PAR and TAR complexes but are still useful for determination of uranium. The TAMH chelate can be extracted into isobutyl methyl ketone. Both complexes are 1:1 metal :ligand. For the TAMH complex log beta(1) = 8.8, = 1.4 x 10(4) at 610 mmu; for the TAMR complex log beta(1) = 8.1, = 2.0 x 10(4) at 530 mmu.
Sommer
L
L
Department of Analytical Chemistry, J.E. Purkyne-University, Brno, Czechoslovakia.
Sepel
T
T
Ivanov
V M
VM