Study of Acid-Base and Redox Equilibria for the C60/C60H2 System in Dimethyl Sulfoxide Solvent

1994 ◽  
Vol 98 (49) ◽  
pp. 13093-13098 ◽  
Author(s):  
Murat E. Niyazymbetov ◽  
Dennis H. Evans ◽  
Susan A. Lerke ◽  
Paul A. Cahill ◽  
Craig C. Henderson
Keyword(s):  
Dimethyl Sulfoxide ◽  
Acid Base ◽  
Redox Equilibria

A potentiometric study of (acid+base) equilibria in substituted 4-nitropyridine N-oxide systems in methanol and dimethyl sulfoxide

2007 ◽  
Vol 39 (2) ◽  
pp. 309-315 ◽  
Author(s):  
Łukasz Gurzyński ◽  
Aniela Puszko ◽  
Mariusz Makowski ◽  
Lech Chmurzyński
Keyword(s):  
Dimethyl Sulfoxide ◽  
Acid Base ◽  
Oxide Systems ◽  
Potentiometric Study

Acid–base equilibrium dynamics in methanol and dimethyl sulfoxide probed by two-dimensional infrared spectroscopy

2015 ◽  
Vol 17 (27) ◽  
pp. 17557-17561 ◽  
Author(s):  
Chiho Lee ◽  
Hyewon Son ◽  
Sungnam Park
Keyword(s):  
Infrared Spectroscopy ◽  
Dimethyl Sulfoxide ◽  
Acid Dissociation ◽  
Two Dimensional ◽  
Acid Base ◽  
Equilibrium Dynamics ◽  
Dissociation Equilibrium ◽  
Acid Base Equilibrium ◽  
2Dir Spectroscopy ◽  
Two Dimensional Infrared Spectroscopy

Two-dimensional infrared (2DIR) spectroscopy was successfully used to investigate the acid dissociation equilibrium of HN3 in methanol (CH3OH) and dimethyl sulfoxide (DMSO).

Acid—base equilibria in the mixed solvent 80% dimethyl sulfoxide—20% water

1977 ◽  
Vol 90 ◽  
pp. 83-89 ◽  
Author(s):  
Milka Georgieva ◽  
Georgi Velinov ◽  
Omortag Budevsky
Keyword(s):  
Dimethyl Sulfoxide ◽  
Mixed Solvent ◽  
Acid Base

Acid—base equilibria in the mixed solvent 80% dimethyl sulfoxide—20% water

1978 ◽  
Vol 101 (1) ◽  
pp. 139-144 ◽  
Author(s):  
Milka Georgieva ◽  
Georgi Velinov ◽  
Omortag Budevsky
Keyword(s):  
Dimethyl Sulfoxide ◽  
Mixed Solvent ◽  
Acid Base

Acid-Base Equilibria of Substituted Pyridine N-Oxides in N,N-Dimethylformamide and Dimethyl Sulfoxide

1993 ◽  
Vol 46 (2) ◽  
pp. 185 ◽  
Author(s):  
L Chmurzynski ◽  
Z Warnke
Keyword(s):  
Dimethyl Sulfoxide ◽  
Linear Relationship ◽  
Aprotic Solvent ◽  
Heterocyclic Amines ◽  
Aprotic Solvents ◽  
Acid Base ◽  
Acidity Constants ◽  
Pka Values ◽  
Weak Tendency

Acidity constants have been determined potentiometrically for a variety of conjugate acids of substituted pyridine N-oxides in N,N- dimethylformamide ( dmf ) and dimethyl sulfoxide ( dmso ). The pKa values in these solvents varied in the same direction and correlated with the pKa values of these species in water and in the protophobic aprotic solvent acetonitrile. Further, a linear relationship has been established between the pKa values in the two protophilic aprotic solvents under study. The most basic substituted pyridine N-oxides exhibited a weak tendency towards cationic homoconjugation in dmf , whereas in the more basic dmso the homoconjugation equilibrium was not established for any of the heterocyclic N-oxides. The phenomenon of cationic homoconjugation was also not observed with pyridine as a representative of heterocyclic amines, both in dmf and dmso. This finding complies with the results obtained in other polar aprotic solvents.

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