Accession Number : AD0716555

Title :   Electrochemistry of Transition Metal Ions in Acetonitrile.

Descriptive Note : Final technical rept.,

Corporate Author : MASSACHUSETTS UNIV AMHERST DEPT OF CHEMISTRY

Personal Author(s) : Olver,John W.

Report Date : OCT 1969

Pagination or Media Count : 8

Abstract : A new method for purification of acetonitrile was required using reduction of impurities with sodium and calcium hydride prior to distillation. On electrolytic reduction the products formed react with solvent, electrolyte and residual water which is so difficult to remove. The dissociation properties were determined for a series of useable polarographic electrolytes such as alkali and tetraalkylammonium halides, perchlorates, tetrafluoroborates, and trifluoracetate. They undertook a study of the properties of the electrical double layer in acetonitrile at a mercury interface which shows extensive adsorption of both anions and cations on the electrode again complicating electrolytic data. Also studied was the electrolytic properties in acetonitrile of copper(II) and copper(I) as a model case for reduction through lower oxidation states to the metal. These ions could be precisely coulometrically reduced to the lower states as in water and the precision was great enough to determine diffusion coefficients for the respective species by the Cottrell method. (Author)

Descriptors :   (*ACETONITRILE, *ELECTROCHEMISTRY), (*ZIRCONIUM COMPOUNDS, ELECTROCHEMISTRY), ORGANIC SOLVENTS, PURIFICATION, COPPER, ELECTRIC DOUBLE LAYER

Subject Categories : Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE