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Advisor(s)
Abstract(s)
Following previous studies, the ternary mixture of methanol/formamide/acetonitrile
(MeOH/Formamide/MeCN) was studied using the UV-Vis absorption spectra at 298.15 K with
a set of five probes, 4-nitroaniline, 4-nitroanisole, 4-nitrophenol, N,N-dimethyl-4-nitroaniline and
2,6-diphenyl-4-(2,4,6-triphenyl-1-pyridinio)phenolate (Reichardt betaine dye), for a total of 22 mole
ternary fractions. In addition, nine mole fractions of the underling binary mixtures, MeOH/Formamide
and Formamide/MeCN were also tested. Spectroscopic results were used to model the preferential
solvation order for each probe in the mixtures. The Kamlet–Taft solvatochromic solvent parameters,
α, β, and π*, were also computed through the use of the solvatochromic shifts of the five probe
indicators. Moreover, discrepancies in the spectroscopic behavior of 4-nitrophenol in formamide-rich
mixtures were observed and analyzed.
Description
Keywords
Ternary mixture Methanol Formamide Acetonitrile Solvatochromic probes Kamlet–Taft parameters Solvation
Citation
Nunes, N.; Elvas-Leitão, R.; Martins, F. Study of the Ternary Mixture of Methanol/Formamide/Acetonitrile via Solvatochromic Probes. Molecules 2024, 29(1), 246. https://doi.org/10.3390/molecules29010246
Publisher
MDPI