Influence of the composition of aqueous dimethylsulfoxide solvent on thermodynamics of complexing between 18-crown-6-ether and D,L-alanine

2012 ◽  
Vol 86 (7) ◽  
pp. 1064-1067 ◽  
Author(s):  
T. R. Usacheva ◽  
I. A. Kuzmina ◽  
V. A. Sharnin ◽  
I. V. Chernov ◽  
E. Matteoli
Keyword(s):  
Aqueous Dimethylsulfoxide

scholarly journals The electrochemical reduction of perrhenate ion in non–aqueous dimethylsulfoxide solutions

2012 ◽  
pp. 94
Author(s):  
Leila Kudreeva ◽  
Zh. Kulbayeva ◽  
Andrey Kurbatov ◽  
Mikhail Nauryzbayev ◽  
M. Ainamkulova
Keyword(s):  
Electrochemical Reduction ◽  
Aqueous Dimethylsulfoxide

The Dissociation of Anilinium Ions in Aqueous Dimethylsulfoxide

1972 ◽  
Vol 50 (4) ◽  
pp. 474-478 ◽  
Author(s):  
Keith Yates ◽  
Graeme Welch
Keyword(s):  
Aqueous Solution ◽  
Solvent System ◽  
Ionization Mechanism ◽  
Normal Order ◽  
Aqueous Dimethylsulfoxide

The pKa values often substituted primary anilines and six substituted tertiary anilines have been determined in 70% DMSO–water. The ΔpKa values relative to those in aqueous solution indicate that DMSO is about 2 log units stronger as a base than H2O. The normal order of basicity (tertiary > primary) is inverted in this solvent system and the Hammett ρ values for the two series provide evidence for a different ionization mechanism than that in water.

The Interaction of Sulfite Ion with 2,4,6-Trinitrobenzaldehyde: Kinetic, Equilibrium, and Proton Magnetic Resonance Studies

1973 ◽  
Vol 51 (23) ◽  
pp. 3927-3935 ◽  
Author(s):  
Neven Marendic ◽  
Albert Richard Norris
Keyword(s):  
Proton Magnetic Resonance ◽  
Equilibrium Constants ◽  
Visible Absorption ◽  
Rapid Formation ◽  
Aqueous Dimethylsulfoxide ◽  
Cis And Trans ◽  
In Cis ◽  
Kinetics Of ◽  
Sulfite Ion ◽  
Kinetic Equilibrium

Sulfite ion reacts with 2,4,6-trinitrobenzaldehyde in aqueous solution of ionic strength 0.14 M to yield a 1:1 σ-complex at low sulfite concentrations and a 2:1 σ-complex at high sulfite concentrations. The visible absorption characteristics of these two σ-complexes as well as equilibrium constants and relevant thermodynamic parameters for their formation have been determined. P.m.r. studies demonstrate that two isomeric forms of the 1:1 σ-complex occur in aqueous dimethylsulfoxide solution and two isomeric forms of the 2:1 σ-complex occur in water. In both the 1:1 and the 2:1 complexes isomers are found which contain sulfite ion attached to the C-1 carbon and one of the isomeric 2:1 σ-complexes is postulated to exist in cis and trans forms. Observations are presented concerning the kinetics of the very rapid formation of the 1:1 σ-complex in water.

Excess partial molar enthalpies, entropies, Gibbs energies, and volumes in aqueous dimethylsulfoxide

1995 ◽  
Vol 24 (1) ◽  
pp. 89-102 ◽  
Author(s):  
John T. W. Lai ◽  
Frankie W. Lau ◽  
Damon Robb ◽  
Peter Westh ◽  
Gerda Nielsen ◽  
...  
Keyword(s):  
Gibbs Energies ◽  
Aqueous Dimethylsulfoxide ◽  
Partial Molar Enthalpies

scholarly journals Reverse osmotic concentration of aqueous dimethylsulfoxide and aniline solutions.

MEMBRANE ◽  
1987 ◽  
Vol 12 (5) ◽  
pp. 295-301
Author(s):  
Masahiro NIWA ◽  
Haruhiko OHYA ◽  
Youichi NEGISHI ◽  
Kanji MATSUMOTO
Keyword(s):  
Osmotic Concentration ◽  
Aqueous Dimethylsulfoxide
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