Interaction between Alkyl Halides and Dipolar Aprotic Solvents

Ionic Equilibria in Protic and in Dipolar Aprotic Solvents

Chemical interactions' as well as 'physical interactions' play an important part in solvation. Some equilibria are reversed on transfer froni protic to dipolar aprotic solvents and this behaviour can be interpreted and predicted through the solvent activity coefficients of the appropriate solutes. Some extrathermodynamic assumptions for the evaluation of single ion solvent activity coefficients...

Desiccant efficiency in solvent drying. 3. Dipolar aprotic solvents.

Solution structures of ferrihaem in some dipolar aprotic solvents and their binary aqueous mixtures.

1. Conductivity and u.v. and visible spectroscopic techniques were used to investigate the solution structure of the prosthetic group of the ferric haemoproteins (ferrihaem) in dimethyl sulphoxide, NN-dimethylacetamide, NN-dimethylformamide and sulpholane, and certain of their aqueous mixtures. 2. In neutral or acid dimethyl sulphoxide, chlorohaemin is monomeric and completely dissociated into ...

Chemistry and applications of polysaccharide solutions in strong electrolytes/dipolar aprotic solvents: an overview.

Biopolymers and their derivatives are being actively investigated as substitutes for petroleum-based polymers. This has generated an intense interest in investigating new solvents, in particular for cellulose, chitin/chitosan, and starch. This overview focuses on recent advances in the dissolution and derivatization of these polysaccharides in solutions of strong electrolytes in dipolar aprotic...

The Application of Insolubilized a-Chymotrypsin to Kinetic Studies on the Effect of Aprotic Dipolar Organic Solvents*

Insolubilized cr-chymotrypsin bound to porous glass gel has been prepared. The kinetic behavior of this fixed enzyme proved to be the same as that of the free enzyme. The effects of aprotic dipolar organic solvents on the kinetics of cr-chymotrypsin-catalyzed hydrolysis were successfully studied using this insolubilized enzyme at concentrations up to 95% v/v dioxane, taking advantage of the ina...