Thiophosphorylated cavitand: structure and affinity towards soft metal ions

Bibal, B;Declercq, Jean-Paul;Dutasta, JP.;Tinant, Bernard;Valade, AGL
(2003) Tetrahedron — Vol. 59, n° 31, p. 5849-5854 (2003)

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Authors
  • Bibal, B
    Author
  • Declercq, Jean-PaulUCLouvain
    Author
  • Dutasta, JP.
    Author
  • Tinant, BernardUCLouvain
    Author
  • Valade, AGL
    Author
Abstract
The iiii stereoisomer of the tetrathiophosphonate-calix[4]resorcinarene host 1 exhibited excellent extraction properties towards soft metal ions, with a better affinity for Ag+ (91%), than for Tl+ (38%) and Hg2+ (16%). The extraction of other picrate salts (Cu2+, Ni2+, Co2+, Zn2+, Cd2+, Pb2+) was not detected. The stoichiometry and the structure of the Hg2+, Tl+ and Ag+ complexes were studied by NMR in solution and gave respectively 1:1, 1:1 and 1:2 host-guest complexes. The formation of the self-assembled 1(2).(AgPic)(4) complex was independent on the anion and only observed with silver(l) ion. (C) 2003 Elsevier Ltd. All rights reserved.
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Bibal, B., Declercq, J.-P., Dutasta, JP., Tinant, B., & Valade, A. (2003). Thiophosphorylated cavitand: structure and affinity towards soft metal ions. Tetrahedron, 59(31), 5849-5854. https://doi.org/10.1016/S0040-4020(03)00946-3 (Original work published 2003)