Zero-current counter-transport studies as well as electrodialytic transport experiments on solvent polymeric membranes doped with ionophores for anions have been carried out and were compared with potentiometric measurements on the same membranes. A theoretical description of the observed phenomena corroborates that lipophilic complexes of Co(II1) (e.g. aquacyano[heptakis(2-phenylethyl)]Co(III) cobyrinate perchlorate) and Mn(II1) (e.g. lipophilic Mn(II1)porphyrin complexes) act as positively charged carriers for anions, whereas a lipophilic Ru(I1)porphyrin complex has to be described as an electrically neutral carrier for anions.Introduction. -Lipophilic derivatives of vitamin B,, (so-called cobesters such as aquocyano[heptakis(2-phenylethyl)]Co(III) cobyrinate perchlorate) were introduced

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036ChemInform Abstract Zero-current counter-transport studies as well as electrodialytic transport experiments on solvent polymeric membranes doped with ionophores for anions are carried out and compared with potentiometric measurements on the same membranes. A theoretical description of the observed phenomena corroborates that lipophilic complexes of Co(III), e.g. (I), and Mn(III), such as (II), act as positively charged carriers for anions, whereas a lipophilic Ru(II) porphyrin complex (III) has to be described as an electrically neutral carrier for anions.