Solvent Exchange on Main Group Metal Ions

Solvent Exchange on Main Group Metal Ions [Pg.8]

Ion-water Proton Binding Times, g, Obtained from IQENS Experiments on Concentrated Aqueous Ionic Solutions at 298 K (26) [Pg.9]

The only divalent main group ions where exchange rates and activation parameters are experimentally available are beryllium(II), which is also the smallest metal ion (rM = 27pm) (28,29) and magnesium(II) (r-yj = 72 pm). An important consequence of this substantial difference in ionic radii is that Be2+ forms predominantly tetrahedral complexes (30) and Mg2+ is in general surrounded by six solvent molecules forming octahedral complexes (31). [Pg.9]

For DMSO, TMP, DMMP and MMPP the second-order term, k , dominates and either an A or an Ia mechanism operates, as it is also indicated by the negative AV measured for DMSO and TMP (30). Both terms [Pg.9]

1A11 ionic radii in this revue are from Refs. (28,29). [Pg.9]

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