Thermodynamic parameters for the protonation of carboxylic acids in aqueous tetraethylammonium iodide solutions

1990 ◽  
Vol 19 (6) ◽  
pp. 569-587 ◽  
Author(s):  
Alessandro De Robertis ◽  
Concetta De Stefano ◽  
Carmelo Rigano ◽  
Silvio Sammartano
Keyword(s):  
Thermodynamic Parameters ◽  
Carboxylic Acids ◽  
Tetraethylammonium Iodide

Electron spin resonance study of γ-irradiated tetraethylammonium iodide

1968 ◽  
Vol 46 (16) ◽  
pp. 2749-2752 ◽  
Author(s):  
L. Fabes ◽  
J. K. S. Wan
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Secondary Reaction ◽  
Electron Spin Resonance Study ◽  
Methyl Radicals ◽  
Γ Irradiation ◽  
Spin Resonance ◽  
Secondary Radical ◽  
Tetraethylammonium Iodide ◽  
Spin Resonance Study

γ-Irradiation of polycrystalline tetraethylammonium iodide at 77°K leads to the breaking of a C—C bond and the primary radicals ĊH3 and [Formula: see text] were detected by electron spin resonance. The methyl radicals were found to disappear readily at 120°K. In the range of 263–273°K a secondary reaction between [Formula: see text] and the parent ion [Formula: see text] was observed; the resulting secondary radical [Formula: see text] was found to be stable up to 373°K.

Electrical conductivities of quaternary ammonium salts in acetone.: Part III. Ion-pair formation

1968 ◽  
Vol 46 (12) ◽  
pp. 2005-2011 ◽  
Author(s):  
W. A. Adams ◽  
K. J. Laidler
Keyword(s):  
Dissociation Constants ◽  
Ion Pairs ◽  
Ion Pair ◽  
Pair Formation ◽  
Quaternary Ammonium Salts ◽  
Acetone Solution ◽  
Ammonium Salts ◽  
Electrical Conductivities ◽  
Tetraethylammonium Iodide ◽  
Kbar Pressure

The ion-pair dissociation constants determined from a Shedlovsky analysis of conductivity (see Part I) were used to calculate the enthalpy, the internal energy at constant volume, the entropy, and the volume of dissociation of tetramethylammonium iodide, tetraethylammonium iodide, and tetra-n-propylammonium iodide ion pairs in acetone solution. The sign and magnitude of these parameters over the range of conditions investigated, temperature 25 to 55 °C and atmospheric to 1.1 kbar pressure, indicated that the free ions in acetone solution are extensively solvated and that, depending on the conditions, solvent-shared or solvent-separated ion pairs are formed.

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