Solution chemistry in dichloroacetic acid. II. Conductance studies of acids and bases in dichloroacetic acid

1976 ◽  
Vol 29 (9) ◽  
pp. 1931
Author(s):  
KC Malhotra ◽  
RG Sud
Keyword(s):  
Lewis Acids ◽  
Ion Pair ◽  
Pair Formation ◽  
Solution Chemistry ◽  
Dichloroacetic Acid ◽  
Acids And Bases ◽  
Triple Ion Formation ◽  
Triple Ion ◽  
Protonic Acids

Conductance measurements of protonic acids and Lewis acids have been carried out in dichloroacetic acid at 25 � 0.l�C. Λ0, values have been determined for these acids; it is found that there is extensive ion-pair formation in solution. The role of CHCl2CO2H as a differentiating solvent has been explored. Triple-ion formation for SbCl5 and AlBr3 is indicated which is supported by log C against logΛc curves. Similar trends have been indicated for organic tertiary bases in dichloroaceticacid. Conductometric studies of the same salts in dichloroacetic acid have also been carried out. Fluorosulphuric acid has been developed as an acidic titrant for the estimation of bases in dichloroacetic acid.

Solution Chemistry in Fused Phenol. III. Conductance Studies of the Solutions of Acids, Bases and Salts in Fused Phenol

1979 ◽  
Vol 32 (5) ◽  
pp. 1039 ◽  
Author(s):  
KC Malhotra ◽  
VP Mahajan ◽  
RG Sud
Keyword(s):  
Quaternary Ammonium ◽  
Lewis Acids ◽  
Ion Pair ◽  
Pair Formation ◽  
Solution Chemistry ◽  
Inorganic Salts ◽  
Weak Bases ◽  
Triple Ion Formation ◽  
Triple Ion ◽  
Protonic Acids

Conductance measurements of protonic acids, Lewis acids, bases and quaternary ammonium and inorganic salts have been carried out in fused phenol at 50 � 0.1°C. The possibility of triple ion formation has been ruled out: however, an extensive ion pair formation in the solution is supported by results from plots of Λc against log√C Λ0 values have been determined for these solutes. A possibility of the estimation of weak bases, in fused phenol, has been explored, fluorosulfuric acid being used as a titrant.

scholarly journals Ion-Pair Formation of [CoIII(pn)2(Cl)(L)2+····· I−] by Aqueous-Organic Solvent Medium Enhanced Photoreduction: A Perspective Regression Analysis

2020 ◽  
Vol 32 (6) ◽  
pp. 1379-1383
Author(s):  
L. Devaraj Stephen ◽  
S.G. Gunasekaran ◽  
M. Soundarrajan
Keyword(s):  
Charge Transfer ◽  
Organic Solvent ◽  
High Performance ◽  
Ion Pair ◽  
Pair Formation ◽  
The Novel ◽  
Solvent Medium ◽  
Ion Pair Formation ◽  
Iodide Ion

Reduction of CoIII centre in CoIII(pn)2(Cl)(L)2+ with reference to solvent medium and structure of the complex via ion pair charge transfer (IPCT) paves way for the novel reaction mechanism route. In this work, we prepared, characterized and photoinduced the complexes CoIII(pn)2(Cl)(L)2+ (where L = RC6H4NH2, R = m-OMe, p-F and H) in the presence of iodide ion. Quantum yield for 254 nm excitation of CoIII(pn)2(Cl)(L)2+(where L = RC6H4NH2, R = m-OMe, p-F and H) in water-1,4-dioxane mixtures (Diox = 0, 5, 10, 15, 20, 25, and 30% (v/v)) were also derived for all the complexes in presence of added iodide ion, in which CoIII was reduced via [CoIII(pn)2(Cl)(L)2+….. I-] ion-pair formation. The photoinduced state is ion-pair charge transfer transition state and the quantum efficiency is solvent reliant and they are non-reactive. That is, change in ΦCo(II) is dependable with observed increase in xDiox of the mixed solvent medium. Correlation analysis using empirical parameters εr, Y, ET N and DNN provides a model to understand the solvent medium participation and interaction. This work gains an insight into the role of aqueous-organic solvent medium in CoIII(pn)2(Cl)(L)2+ photoreduction, which may be of great significance in developing novel approaches in the field of high performance catalysis

Ion-Pair and Triple-Ion Formation by Some Tetraalkylammonium Iodides in Binary Mixtures of 1,4-Dioxane + Tetrahydrofuran

2008 ◽  
Vol 53 (7) ◽  
pp. 1417-1420 ◽  
Author(s):  
Mahendra Nath Roy ◽  
Prasanna Pradhan ◽  
Rajesh Kumar Das ◽  
Biswajit Sinha ◽  
Prabir Kumar Guha
Keyword(s):  
Binary Mixtures ◽  
Ion Pair ◽  
Ion Formation ◽  
Triple Ion Formation ◽  
Triple Ion
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