1973•NIPPON KAGAKU KAISHIOpen access

Electrical Conductances of Alkali, Alkaline Earth and Tetraalkylammonium Perchlorates in Dimethylacetamide Solutions

Taitiro Fujinaga, Sachiko Sakura

Abstract

The equivalent conductances of alkali, alkaline earth, and tetraalkylammonium perchlorates were measured in dimethylacetamide (DMA); the values obtained for Li+, Rb+, Cs+, Ca2+, Sr2+, Ba2+, Me4N+, Et4N+, Hex4N+ and tetradecyl-dimethyl-benzyl-ammonium (TDDMB) ion were 21.3 4, 25.1 4, 26.4 1, 42.0 2, 41.6 8, 41.6 0, 34.8 5, 33.1 6, 18.81, and 18.6 0, respectively.Therefore, the Stokes law radius of a monovalent cation is the smallest for Me4N+ and the largest for TDDMB ion. The solvation number obtained from the effective ionic radius of Robinson and Stokes is 2-3 for alkali ions except Li+ and approximately 4 for alkaline earth ions and Li+.

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Key concepts: Alkali metal, Ionic radius, Dimethylacetamide, Alkaline earth metal, Chemistry, Inorganic chemistry, Ion, Solvation