ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Complexation equilibria in the systems bi(iii)-2-(2'-thiazolylazo)-4,6-dimethylphenol and hg(ii)-2-(4',5'-dimethyl-2'-thiazolylazo)-4,6-dimethylphenol

B. Santana, M.J. Sánchez, J.J. Arias, and F. Garciá-Montelongo

Department of Analytical Chemistry, University of La Laguna, E38204-La Laguna

Abstract: In an ethanol—water medium (φ(ethanol) = 40 vol. %) at I(NaCl0₄) = = 0.25 mol dm - 3 the system Bi(III)—2-(2'-thiazolylazo)-4,6-dimethylphenol forms the complex species Bi(OH)R (logβ₁₁₁ = 10.96 ± 0.09) and Bi(OH)₂R (log ß₁₂₁ = 8.58 ±0.13), and the system Hg(II)—2-(4',5'-dimethyl-2'-thiazolylazo)-4,6-dimethylphenol forms the complexes HgR (log ß₁₀₁= 10.95 ± 0.05) and Hg(OH)R (log ß₁₁₁, = 8.07 ± 0.02).

Full paper in Portable Document Format: 424a513.pdf

Chemical Papers 42 (4) 513–518 (1988)