ISSN:
0170-2041
Keywords:
Ethylammonium nitrate
;
Solvent polarity
;
ET(30) scale
;
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The maximum wavelength of the solvatochromic absorption band of Dimroth-Reichardt's dye I, 2,4,6-triphenylpyridinium N-4-(2,6-diphenylphenoxide) betaine, has been determined at 25°C from the ultraviolet-visible spectra of solutions of this dye in ethylammonium nitrate (EAN) and its mixtures with several polar solvents. The related molar transition energy, ET(30) in kcal/mol, of the long-wavelength absorption band increases sharply, when EAN is dissolved at low concentrations in the various solvents. The pronounced blue shift of the absorption band is attributed to the hydrogen-bond interaction between the ethylammonium cation and the ground state of the betaine molecule.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/jlac.199119910105
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