TY - JOUR
T1 - Are ionic stokes radii of any use?
AU - Marcus, Yizhak
PY - 2012/12
Y1 - 2012/12
N2 - The derivation of ionic Stokes radii, r iSt, from ion mobilities (conductivities λ i ∞) and their relation to the actual ionic radii, of the bare or the hydrated ions, is followed through the years. It is concluded that such quantities as r iSt do not convey any useful information beyond what is already available in the λ i ∞, and in particular that the r iSt should not be used for the estimation of solvation numbers. The concept of a Stokes radius of ions that are smaller than or commensurate with molecules of the solvent should be scrapped altogether.
AB - The derivation of ionic Stokes radii, r iSt, from ion mobilities (conductivities λ i ∞) and their relation to the actual ionic radii, of the bare or the hydrated ions, is followed through the years. It is concluded that such quantities as r iSt do not convey any useful information beyond what is already available in the λ i ∞, and in particular that the r iSt should not be used for the estimation of solvation numbers. The concept of a Stokes radius of ions that are smaller than or commensurate with molecules of the solvent should be scrapped altogether.
KW - Dielectric friction
KW - Hydrated ion radius
KW - Hydration number
KW - Ionic Stokes radius
UR - http://www.scopus.com/inward/record.url?scp=84874464996&partnerID=8YFLogxK
U2 - 10.1007/s10953-012-9922-4
DO - 10.1007/s10953-012-9922-4
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AN - SCOPUS:84874464996
SN - 0095-9782
VL - 41
SP - 2082
EP - 2090
JO - Journal of Solution Chemistry
JF - Journal of Solution Chemistry
IS - 11
ER -