Strontium complexes of calixarene amides in the solid state: structural dependence on the ligand size and on the counter ions
- 18 September 2000
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 19,p. 3411-3415
- https://doi.org/10.1039/b004402o
Abstract
For the first time, crystal structures of three strontium complexes of calixarene amides have been determined. A p-tert-butylcalix[6]arene hexaamide forms a 1∶1 complex with Sr(Pic)2 (Pic = picrate), whereas p-tert-butylcalix[8]arene and p-methoxycalix[8]arene octaamides encapsulate two strontium cations each. The binding geometries of the metal cations depend on the ligand size and on the counter anion used (chloride or picrate).Keywords
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