TRANSPORT OF CRYPTATES AS MODEL BROWNONS - ELECTRICAL MOBILITIES AND SELF-DIFFUSION COEFFICIENTS OF MONOVALENT AND DIVALENT IONS CRYPTATED BY 222 IN AQUEOUS-SOLUTIONS

Cryptates present a quasi-spherical symmetry and a practically constan t size for a charge varying from 0 (uncharged empty cryptand) to 1 or 2 (cryptand containing a monovalent or divalent cation). They are ther efore sensible models of heavy and large particles undergoing Brownian motion (brownons). Their transport properties in aqueous solutions, e lectrophoretic mobilities, and self-diffusion coefficients are in good agreement with this Brownian dynamical model.