One-step heterogeneous assembly of terbium(iii) and silver(i) with thiacalix[4]arene ligands to form a cage including terbium(iii) in an octa-oxygen cube

Journal of Inclusion Phenomena (Impact Factor: 1.43). 08/2009; 64(3):379-383. DOI: 10.1007/s10847-009-9567-0

ABSTRACT A heterogeneous one-step self-assembly of Ag+, Tb3+, and thiacalix[4]arene (TCAS), of which the donor atoms S and O showed high selectivity toward Ag+ and Tb3+ ions, respectively, afforded a supramolecular cage compound,

\textAg4 + \textTb 3+ \textTCAS 2 {\text{Ag}}_{4}^{ + } \cdot{\text{Tb}}^{ 3+ } \cdot{\text{TCAS}}_{ 2} , at the center of which an octa-oxygen cube encapsulated the Tb3+ center to completely shield it from solvent molecules.

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