Serviços Personalizados
Journal
Artigo
Indicadores
- Citado por SciELO
- Acessos
Links relacionados
- Citado por Google
- Similares em SciELO
- Similares em Google
Compartilhar
Revista Colombiana de Ciencias Químico - Farmacéuticas
versão impressa ISSN 0034-7418
Resumo
AREIZA ALDANA, Grecia Angeline del Mar et al. Solution thermodynamics and preferential solvation of 3-chloro-N-phenyl-phthalimide in acetone + methanol mixtures. Rev. colomb. cienc. quim. farm. [online]. 2016, vol.45, n.2, pp.256-274. ISSN 0034-7418. https://doi.org/10.15446/rcciquifa.v45n2.59941.
The thermodynamic properties of the 3-chloro-N-phenyl-phthalimide in acetone + methanol cosolvent mixtures were obtained from solubility data report in literature. The solubility was higher in near acetone and lower in pure methanol at all temperatures studied. A non-linear plot of ∆solnH° vs. ∆solnG° shows a negative slope from pure acetone up to x1 = 0.691. Beyond this composition, a variable positive slope is obtained with the exception of mixtures with x1 = 0.121, x1 = 0.272 and x1 = 0.356 which is a not common trend in these systems. The preferential solvation of 3-chloro-N-phenyl-phthalimide by the components of the solvents was estimated by means of the inverse Kirkwood-Buff integral method, showing the 3-chloro-Nphenyl-phthalimide is preferential solvated by methanol in more polar mixtures and by acetone in less polar ones.
Palavras-chave : 3-Chloro-N-phenylphthalimide; solubility; solution thermodynamics; activity coefficients; preferential solvation.