10081-39-7Relevant articles and documents
THE POLARITY OF ALCOHOLIC ELECTROLYTE SOLUTIONS. A SYSTEMATIC STUDY
Rezende, Marcos Caroli
, p. 3513 - 3522 (1988)
The ET(30) polarity values of alcoholic salt solutions were determined for twenty salt/solvent combinations.In all cases equation correlates accurately the medium polarity with the salt concentration.The meaning of this equation is discussed in terms of possible interactions in solution.The dye (1) is shown to be a useful probe for the cationic environment of salts in solution.
Tamura et al.
, p. 2988,2989 (1973)
The positive halochromism of phenolate dyes in hydroxylic solutions of tetraalkylammonium cations
Rezende, Marcos Caroli,Dominguez, Moisés,Aracena, Andrés
body text, p. 61 - 66 (2012/03/07)
By contrast with the negative halochromic behaviour shown by phenolate betaines in the presence of alkaline and alkaline-earth cations, the addition of tetraalkylammonium salts to hydroxylic solutions of these dyes generate bathochromic shifts of their charge-transfer band. This positive halochromic behaviour by organic cations was examined systematically and its origin rationalized by nonspecific changes of the medium permittivity, and by specific dye-cation interactions in solution.