Ionophoric properties of a tetra-tetrazole functionalised calix[4]arene

The synthesis and characterisation of p-t-butylcalix[4]arene functionalised at the lower rim with four tetrazole moieties is reported. The macrocycle is found to be a poorer ionophore for lanthanoid cations than the bis-tetrazole–substituted analogue. Solution-phase photophysical studies strongly suggested that the cations interacted only weakly with the calixarene ligand. A mixed sodium/triethylammonium salt of the calixarene ligand was crystallised in the presence of lanthanoid cations and structurally characterised. Strong intramolecular interactions are hypothesised to be the cause of the observed behaviour. © 2015 Taylor & Francis

Keywords

Tetrazoles, Cations, Calixarenes, Ligands, Rare earths, Crystal structure, Crystallization, Synthesis, Electrophoresis

Citation

D'Alessio, D., Skelton, B. W., Lengkeek, N. A., Fraser, B. H., Krause-Heuer, A. M., Muzzioli, S., Stagni, S., Massi, M., & Ogden, M. I. (2015). IIonophoric properties of a tetra-tetrazole functionalised calix[4]arene. Supramolecular Chemistry, 27(11-12), 787-791. doi:10.1080/10610278.2015.1075536