TY - JOUR
T1 - Relationships among solvent softness scales
AU - Chen, Ting
AU - Hefter, Glenn
AU - Marcus, Yizhak
PY - 2000/3
Y1 - 2000/3
N2 - Quantitative measures of solvent softness, in the sense of Pearson's hard-soft acid-base (HSAB) concept, are considered using three scales: the μ scale, based on the Gibbs energies of transfer of selected ions, the Raman wavenumber shift of HgBr2 (the Ds scale), and the difference between the IR wavenumber shift of the C-I stretch of ICN and the O-H stretch of phenol. Raman and IR band shifts have been measured for a number of solvents for the neat ones (Raman) and in CCl4 solution (IR). Good linear correlations between the three scales are obtained that permit the prediction of the softness of a wide range of solvents. A number of anomalies encountered are discussed.
AB - Quantitative measures of solvent softness, in the sense of Pearson's hard-soft acid-base (HSAB) concept, are considered using three scales: the μ scale, based on the Gibbs energies of transfer of selected ions, the Raman wavenumber shift of HgBr2 (the Ds scale), and the difference between the IR wavenumber shift of the C-I stretch of ICN and the O-H stretch of phenol. Raman and IR band shifts have been measured for a number of solvents for the neat ones (Raman) and in CCl4 solution (IR). Good linear correlations between the three scales are obtained that permit the prediction of the softness of a wide range of solvents. A number of anomalies encountered are discussed.
KW - IR band of ICN
KW - IR band of phenol
KW - Raman band of HgBr
KW - Softness parameters
KW - Solvent softness
UR - http://www.scopus.com/inward/record.url?scp=0034348820&partnerID=8YFLogxK
U2 - 10.1023/A:1005114615767
DO - 10.1023/A:1005114615767
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AN - SCOPUS:0034348820
SN - 0095-9782
VL - 29
SP - 201
EP - 216
JO - Journal of Solution Chemistry
JF - Journal of Solution Chemistry
IS - 3
ER -