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Issue 28, 2006
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Host–guest interaction between cyclen based macrotricyclic ligands and phosphate anions. A potentiometric investigation

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Abstract

The host–guest interaction between orthophosphate, pyrophosphate and triphosphate anions and three cyclen based macrotricyclic ligands possessing ortho- (TOC), meta- (TMC) and para-xylenyl (TPC) linkers was investigated by potentiometric measurements. The ternary species present in solution and their stability constants have been determined. The different behaviours are explained in terms of hydrogen bond formation and coulombic attraction between the organic host and the inorganic guest. The selectivity, illustrated with species distribution diagrams, is discussed. The results unambiguously showed the importance of the distance between the two cyclen cores and emphasized the increasing of the triphosphate species selectivity together with the cavity size of the ligand. A comparison of the present results with those obtained with their mono-bridged homologues is also discussed.

Graphical abstract: Host–guest interaction between cyclen based macrotricyclic ligands and phosphate anions. A potentiometric investigation

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Publication details

The article was received on 13 Dec 2005, accepted on 24 Mar 2006 and first published on 06 Apr 2006


Article type: Paper
DOI: 10.1039/B517695F
Dalton Trans., 2006, 3418-3426

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    Host–guest interaction between cyclen based macrotricyclic ligands and phosphate anions. A potentiometric investigation

    S. Develay, R. Tripier, M. Le Baccon, V. Patinec, G. Serratrice and H. Handel, Dalton Trans., 2006, 3418
    DOI: 10.1039/B517695F

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