Abstract

ABSTRACT The determination of the thermodynamic constants for the extraction of the neodyrriium salts, Nd(NCS)3, Nd(ClO4)3 and Nd(NO3)3 with Di(l-methyl-heptyl) methyl phosphonate, and the crystal and molecular structures of the respective extracted complexes with triphenyl phosphine oxide, used as a model molecule of neutral organophosphine extractants, are reported here. The influence of the different anions on these systems has been interpreted microscopically and macroscopically. The IR data of the saturated organic phases and the solid complexes have been discussed as well.

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