Stoichiometry of uranyl salophene anion complexes

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In PVC/NPOE ion-selective membranes of potentiometric sensors, the guest-host stoichiometry of the anion complex of H2PO4 - and F- selective uranyl salophene derivatives is 2:1. This stoichiometry is different from the stoichiometry observed in DMSO solution (1H NMR) or solid state (X-ray crystal structure). However, the 2:1 stoichiometry like that in the PVC/NPOE membrane matrix is also observed by 1H NMR spectroscopy in nonpolar solvents such as chloroform. In contrast with the relatively hard H2PO4 - and F- anions, the softer Cl- is bound in a 1:1 stoichiometry by the uranyl salophenes in chloroform.
Original languageUndefined
Pages (from-to)9776-9781
JournalThe journal of organic chemistry
Issue number63
Publication statusPublished - 1998


  • METIS-105968
  • IR-11048

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