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  • 1 Institute of Nuclear Research Department of Radiochemistry Warsaw Poland
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Single-ion partition coefficients have been calculated for NBu 4+ and I in the system water—chloroform. The standard free energy of transfer of each ion was separated into an electrostatic and a neutral term. The electrostatic term was calculated with the aid of the Born equation. In the case of I the neutral term was calculated with the aid of the xenongas assumption, whereas in the case of NBu 4+ the tetrabutylmethane assumption was used. The results of the calculation were compared with the experimentally found partition coefficient of the completely dissociated ion-pair NBu4I.