A unified scale of solvent polarities for specific and non-specific interactions

Abstract

A unified scale for predicting non-specific solvent polarity employs the physicochemical properties of solutes, such as NMR, EPR, electronic transitions, etc., and the equation Ax = S'P + W in order to produce a scale of non-specific solvating ability. This approach is successful due to the exclusion of data for systems where donor-acceptor interactions exist. In this paper, the Unified Scale is extended t o include systems in polar acceptor solvents by using the equation Ax = Paper 3/03068G

Catalyzed Cyclization of 2-((3-Halopropyl)oxy)phenoxide Ions in Zwitterionic and Nonionic Micelles

“…Kinetic Medium Effect. Medium effects upon rates of intermolecular S N 2 reactions and cyclizations of PhBr7 and PhI7 are governed by similar forces. , The factors that contribute to solvent−solute interactions have been discussed in detail and are evaluated quantitatively in various treatments . Effects are largest with dipolar, aprotic solvents which cannot hydrogen bond to, and deactivate, small nucleophilic anions, but can solvate low-charge-density anionic transition states.…”

Solvent effects on redox properties of radical ions 1

“…∆E Њ ∆π* = 2.8(±0.6) Ϫ 0.46(±0.08)IP (10) The statistical parameters for the linear regression are r 2 = 0.82, F = 33 and the standard deviation is 0.13. Despite…”

Solvent effect on the spectral properties of Neutral Red

“…A unified scale of solvent polarities, taking into account both the non-specific and specific donor acceptor interactions of these solvents with solute probes, was introduced by Drago and co-workers and shown in its mathematical form below [ 17 ]:…”