Cluster control in oligouranyl complexes of p-t-butylcalix[8]arene
Identifieur interne : 007111 ( Main/Exploration ); précédent : 007110; suivant : 007112Cluster control in oligouranyl complexes of p-t-butylcalix[8]arene
Auteurs : Jack M. Harrowfield [France] ; Mark I. Ogden [Australie] ; Brian W. Skelton [Australie] ; Allan H. White [Australie]Source :
- Dalton Transactions [ 1477-9226 ] ; 2010.
English descriptors
- KwdEn :
- Acetonitrile, Analytical correction, Anion, Aromatic rings, Asymmetric unit, Calixarene, Calixarene anions, Calixarene conformation, Calixarene ligand, Calixarenes, Cation, Central oxygen atom, Chem, Conformation, Convergent atoms, Crystallographic symmetry, Dalton trans, Diffraction studies, Diuranate, Divergent atoms, Dmso solution, Equatorial, Equatorial plane, Hydrogen atoms, Initial reaction mixture, Lewis base, Ligand, Metal ions, Mirror plane, Oxygen atoms, Pentagonal bipyramidal, Phenolic oxygen atoms, Present examples, Present work, Protonation state, Ring size, Rint, Royal society, Same side, Solvent components, Solvent molecules, Space group, Structure determinations, Tetramethylammonium hydroxide, Thermal ellipsoids, Trans, Triethylammonium salt, Uranium atoms, Uranyl, Uranyl units.
- Teeft :
- Acetonitrile, Analytical correction, Anion, Aromatic rings, Asymmetric unit, Calixarene, Calixarene anions, Calixarene conformation, Calixarene ligand, Calixarenes, Cation, Central oxygen atom, Chem, Conformation, Convergent atoms, Crystallographic symmetry, Dalton trans, Diffraction studies, Diuranate, Divergent atoms, Dmso solution, Equatorial, Equatorial plane, Hydrogen atoms, Initial reaction mixture, Lewis base, Ligand, Metal ions, Mirror plane, Oxygen atoms, Pentagonal bipyramidal, Phenolic oxygen atoms, Present examples, Present work, Protonation state, Ring size, Rint, Royal society, Same side, Solvent components, Solvent molecules, Space group, Structure determinations, Tetramethylammonium hydroxide, Thermal ellipsoids, Trans, Triethylammonium salt, Uranium atoms, Uranyl, Uranyl units.
Abstract
Formation of uranyl ion complexes of p-t-butylcalix[8]arene by reaction of the calixarene with [UO2(dmso)5]2+ in the presence of various bases leads to the crystallisation of solids with interestingly different stoichiometry, involving both di- and tri-uranate oligomers bound to the calixarene in anionic species. In all, the calixarene hexa-anion is present in a virtually identical conformation, suggesting that conformational preferences of the ligand must be a major factor controlling the form of the bound oxo-metal complex. Hydrogen bonding to the anions does not appear to be prominent even in the presence of protonated amines and this may explain the formation of some remarkable cation/solvent/simple anion clusters found within the lattices.
Url:
DOI: 10.1039/c0dt00667j
Affiliations:
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<front><div type="abstract">Formation of uranyl ion complexes of p-t-butylcalix[8]arene by reaction of the calixarene with [UO2(dmso)5]2+ in the presence of various bases leads to the crystallisation of solids with interestingly different stoichiometry, involving both di- and tri-uranate oligomers bound to the calixarene in anionic species. In all, the calixarene hexa-anion is present in a virtually identical conformation, suggesting that conformational preferences of the ligand must be a major factor controlling the form of the bound oxo-metal complex. Hydrogen bonding to the anions does not appear to be prominent even in the presence of protonated amines and this may explain the formation of some remarkable cation/solvent/simple anion clusters found within the lattices.</div>
</front>
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