Peculiar reversed-phase HPLC behaviour of cationic alkylcobalt(III) complexes holding a tridentate Schiff base ligand

Reversed-phase (RP) chromatographic behaviour of a series of acid-sensitive cationic alkylcobalt(III) chelates with both [N 2O] Schiff base and ethylenediamine has been studied. Their retention times depend on the water content of the mixed eluents in an unusual parabolic manner, which is ascribed t...

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Bibliographic Details
Published in:Inorganica Chimica Acta 1995-12, Vol.240 (1), p.665-668
Main Authors: Nesterenko, Pavel N, Levitin, Ilia Ya, Tsikalova, Marina V, Vol'pin, Mark E
Format: Article
Language:English
Subjects:
Alkyl complexes
Cobalt complexes
Reversed-phase chromatography
Schiff base complexes
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Summary:Reversed-phase (RP) chromatographic behaviour of a series of acid-sensitive cationic alkylcobalt(III) chelates with both [N 2O] Schiff base and ethylenediamine has been studied. Their retention times depend on the water content of the mixed eluents in an unusual parabolic manner, which is ascribed to the biphylic nature of the structures in question. Optimal conditions for RP HPLC quantitative analysis of these rather labile organocobalt complexes have been developed. Their decomposition in solutions under ambient conditions has been surveyed using this technique.
ISSN:0020-1693
1873-3255
DOI:10.1016/0020-1693(95)04551-1