Abstract

Halide ion conductivities of the complexes of cryptand[2.2.2] with alkali-metal halides or alkaline-earth metal halides were measured at 20–160°C. The halide ion conductivities of the complexes were found to be much higher than those of the crown ether complexes with alkali-metal halides or alkaline-earth metal halides. This is caused by the much weaker Coulomb attraction between metal-cation and halide ion in cryptand complexes than in crown ether complexes.

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