Studies on the Dissociation Constants and Ion-Solvation in Aqueous Ethanol, Non-Aqueous Solvents and their Aqueous Mixtures of Some Benzocyclobuten-1 (2H) Ones

Autor:	Saad Wasif, Barsoum Nashid, George Iskander
Rok vydání:	2010
Předmět:	Dissociation constant chemistry.chemical_classification chemistry.chemical_compound Aqueous solution Ketone chemistry Inorganic chemistry Solvation Dimethylformamide General Chemistry Aqueous ethanol Acetonitrile Ion
Zdroj:	Bulletin des Sociétés Chimiques Belges. 92:91-100
ISSN:	0037-9646
DOI:	10.1002/bscb.19830920202
Popis:	The pK'a values of five 4-hydroxybenzocyclobuten-1 (2H)ones (I) in aqueous ethanol, dioxane, acetonitrile and dimethylformamide have been determined. The Hammett parameter ρ varies for each phenolic ketone with the aqueous solvent composition, which reflects possible sensitivity to solvent polarity. The molar free energies of transfer of (I) from water to 20-60 wt % of organic solvent-water mixtures haven evaluated. The results so obtained, are explained by a structural theory of ion salvation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e7572e36c24fdf040d152e86f688262c https://doi.org/10.1002/bscb.19830920202 Zobrazit plný text záznamu