Stoichiometry of uranyl salophene anion complexes


Antonisse, Martijn M.G. and Snellink-Ruël, Bianca H.M. and Engbersen, Johan F.J. and Reinhoudt, David N. (1998) Stoichiometry of uranyl salophene anion complexes. Journal of organic chemistry, 63 (26). pp. 9776-9781. ISSN 0022-3263

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Abstract: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.
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Copyright:© 1998 American Chemical Society
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Metis ID: 105968