Cluster control in oligouranyl complexes of p-t-butylcalix[8]arene.

نویسندگان

  • Jack M Harrowfield
  • Mark I Ogden
  • Brian W Skelton
  • Allan H White
چکیده

Formation of uranyl ion complexes of p-t-butylcalix[8]arene by reaction of the calixarene with [UO(2)(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.

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عنوان ژورنال:
  • Dalton transactions

دوره 39 35  شماره 

صفحات  -

تاریخ انتشار 2010