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).
Strontium Complexes of calixarenes amides in the solid state: structural dependence on the ligand size and on the counter ion / CASNATI A.; BALDINI L.; PELIZZI N.; RISSANEN K.; UGOZZOLI F.; UNGARO R.. - In: DALTON. - ISSN 1470-479X. - (2000), pp. 3411-3415. [10.1039/b004402o]
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