Competitive bulk liquid membrane transport and solvent extraction of some metal ions using RC(S)NHP(X)(OiPr)2 (X = O, S) as ionophores. Formation of the polynuclear complex of [Ag(NC-NP(S)(OiPr)2)] n

Luckay R.C. ; Sheng X. ; Strasser C.E. ; Raubenheimer H.G. ; Safin D.A. ; Babashkina M.G. ; Klein A. (2009)


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 a series of N-(thio)phosphorylated (thio)amide and thiourea ligands as the ionophore present in the organic phase. The source phase contained equimolar concentrations of CoII, NiII, Cu II, ZnII, AgI, CdII and Pb II with the source and receiving phases being buffered at a number of different pHs. Solvent extraction properties of the ligands towards the same metal cations under the same experimental conditions as for the transport were also studied. All ligands demonstrated 100% extraction of AgI. Reaction of AgNO3 with the potassium salt of the N-thiophosphorylated thiourea NH2C(S)NHP(S)(OiPr)2 gave a new supramolecular AgI complex, [AgZ]n (Z = {NC-NP(S)(OiPr)2} -) that contains both tri- and tetracoordinated AgI. The novel polynuclear AgI complex [AgZ]n described and structurally characterized by single crystal X-ray diffraction has no precedent. © The Royal Society of Chemistry 2009.

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