Solute–solvent and solvent–solvent interactions in binary solvent mixtures. Part 8. The  E  T (30) polarity of binary mixtures of formamides with hydroxylic solvents | Zendy

Herodes Koit | Zendy; Leito Ivo | Zendy; Koppel Ilmar | Zendy; Rosés Martí | Zendy

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Solute–solvent and solvent–solvent interactions in binary solvent mixtures. Part 8. The E T (30) polarity of binary mixtures of formamides with hydroxylic solvents

Author(s) -

Herodes Koit,

Leito Ivo,

Koppel Ilmar,

Rosés Martí

Publication year - 1999

Publication title -

journal of physical organic chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.325

H-Index - 66

eISSN - 1099-1395

pISSN - 0894-3230

DOI - 10.1002/(sici)1099-1395(199902)12:2<109::aid-poc97>3.0.co;2-l

Subject(s) - solvatochromism , formamide , chemistry , formamides , solvent , dimethylformamide , solvation , methanol , organic chemistry

Solvent effects on the binary mixtures of amides with alcohols and water were investigated by means of Reichardt's E T (30) solvatochromic indicator. E N Tparameters of binary solvent mixtures of formamide, N ‐methylformamide and N,N ‐dimethylformamide with water, methanol, propan‐2‐ol, 2‐methylpropan‐2‐ol, formamide, N ‐methylformamide and N,N ‐dimethylformamide were measured over the whole composition range of the mixtures. Application of a preferential solvation model to the solvatochromic data shows that the preferential solvation of the solvatochromic indicator by the amides decreases in the order N ‐methylformamide > formamide > N,N ‐dimethylformamide. Synergism is observed for the mixtures of the amides with alcohols of similar polarity ( E N Tvalue), i.e. methanol–formamide, methanol– N ‐methylformamide, propan‐2‐ol– N,N ‐dimethylformamide and 2‐methylpropan‐2‐ol– N,N ‐dimethylformamide binary systems. Copyright © 1999 John Wiley & Sons, Ltd.

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