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Transport of cryptates as model brownons: electrical mobilities and self-diffusion coefficients of monovalent and divalent ions cryptated by 222 in aqueous solutions

Rossy-Delluc, S. ; Cartailler, T. ; Turq, P. ; Bernard, Olivier ; Morel-Desrosiers, N. ; Morel, J.-P. ; Kunz, Werner


Cryptates present a quasi-spherical symmetry and a practically const. size for a charge varying from 0 (unchanged empty cryptand) to 1 or 2 (cryptand contg. a monovalent or divalent cation). They are therefore sensible models of heavy and large particles undergoing Brownian motion (brownons). Their transport properties in aq. solns., electrophoretic mobilities, and self-diffusion coeffs. are in good agreement with this Brownian dynamical model.

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