Calixarenes as aryloxides: oligonuclear europium(III) derivatives
MetadataShow full item record
This article was originally published by the Royal Society of Chemistry. It may not be further made available or distributed.
Synthetic and structural studies of europium complexes of calixarene, p-t-Bu-calixarene and p-t-Bu-calix-arene are reported. The complex [Eu2(calixarene-6H)(dmso)5] was found to have a similar structure topreviously reported p-t-Bu- and p-nitro-calixarene complexes of the lanthanides. Despite being prepared undersimilar conditions, the complex of p-t-Bu-calixarene was found to be a tetranuclear assembly, formulated as[(HO)2(OCO2)Eu4(p-t-Bu-calixarene-4H)2(dmso)6]. Expanding the ligand to p-t-Bu-calixarene resulted in theisolation of a larger oligonuclear assembly, [(HO)9(H2O)2Eu7(p-t-Bu-calixarene-6H)2(dmso)6]. In contrast to theconsistent structural type found with the calixarene system, however, use of a different solvent (acetone) gave riseto a much simpler species, [Eu2(p-t-Bu-calixarene-3H)2(dmso)4].
Showing items related by title, author, creator and subject.
DeLaigue, X.; Gutsche, C.; Harrowfield, J.; Ogden, Mark; Skelton, B.; Stewart, D.; White, A. (2004)The syntheses and structures of uranyl complexes of p-t-Bu-calixarene (calixH6) and p-t-Bu-calixarene(calixH9) are reported, further developing the role of calixarenes as 'cluster keepers'. The calixarene ...
Goh, Ching Yong (2012)A selection of amino acid functionalised calixarenes was studied. Acidic amino acid functionalised calixarenes were investigated as crystal growth modifiers. The self-assembly behaviour of proline functionalised ...
Synthesis, structure and conformational mobility of tetra-substituted cyanomethoxy p-tert-butylcalixarenesD'Alessio, D.; Krause-Heuer, A.; Skelton, B.; Fraser, B.; Massi, Massimiliano; Ogden, Mark (2016)The syntheses and single crystal X-ray structure determinations of 5,11,17,23-tetra-tert-butyl-25,26,27,28-tetrakis(cyanomethoxy)calixarene (partial-cone conformer), 5,11,17,23-tetra-tert-butyl-25,27-bis(diethylcarba ...