Polymer pendant crown thioethers: synthesis and Hg^II extraction studies of a novel thiacrown polymer

Abstract

A novel C-substituted crown thioether has been synthesized and used to prepare a cross-linked polystyrene polymer containing pendant crown thioethers and that product has been shown to be effective in extracting Hg^II from acidic aqueous solutions.

References

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9. Characterization for [17]aneS₅-OH (1): mp 30–32 °C. Anal. Found (calc. for C₁₃H₂₆OS₅): C, 43.32 (43.57); H, 7.27 (7.32); S, 44.51 (44.65). ¹H NMR (CDCl₃)δ 1.8–2.0 (4 H, m, CH₂CH₂CH₂), 2.3 (1 H, br s, OH), 2.6–2.85 (14 H, m, CH₂SCH₂), 2.95 (1 H, qnt, CH₂CHS), 3.65 (1 H, dd, HOCH₂CH), 3.80 (1 H, dd, HOCH₂CH). ES-MS m/z(C₁₃H₂₆OS₅, 358): 357 (M – H⁺), 417 (M + OAc^–)(Courtesy of Hugh Gregg, LLNL).
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12. We have also used this method to synthesize the [14]aneS₄-OH crown and its synthesis and characterization will be presented as part of a full paper.
13. Characterization for thiacrown polymer 5: Anal. Found: C, 62.30; H, 7.46; N, 2.42; S, 24.51. IR (KBr, v/cm 2^–1): 3017w, 2920s, 2848w, 1699w, 1603w, 1509w, 1437m, 1421s, 1384m, 1300m, 1259m, 1203w, 1122w, 1034m, 1018m, 922w, 825m, 799m, 711m, 567w.
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