Thiophosphorylated bis-thioureas for competitive bulk liquid membrane transport of some metal ions?

CrystEngComm Pub Date: 2011-12-02 DOI: 10.1039/C1CE06244A

Abstract

Eight N-thiophosphorylated bis-thioureas of the common formula Z[NHC(S)NHP(S)(OiPr)2]2 [Z = ? (1), 1,2-C6H4 (2), 1,3-C6H4 (3), 1,4-C6H4 (4), CH2(1,4-C6H4)2 (5), O(1,4-C6H4)2 (6), S(1,4-C6H4)2 (7), CH2(1,4-C6H10)2 (8)] have been synthesized and characterized by NMR spectroscopy and elemental analysis. Molecular structures of 3, 4, 5·0.5C66H1414, 6·CH22Cl22 and 8 were elucidated by X-ray diffraction revealing two linear intramolecular hydrogen bonds. Their crystal structures are stabilized by four intermolecular hydrogen bonds, which in turn lead to a polymeric chain formation. Competitive transport experiments involving metal ions from an aqueous source phase through a chloroform membrane into an aqueous receiving phase have been carried out using 1–8 as the ionophore present in the organic phase.

Graphical abstract: Thiophosphorylated bis-thioureas for competitive bulk liquid membrane transport of some metal ions
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