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Thin-layer gel chromatography of 8-hydroxyquinoline metal complexes

✍ Scribed by Shibukawa, M. ;Oguma, K. ;Kuroda, R.

Publisher
John Wiley and Sons
Year
1979
Tongue
English
Weight
465 KB
Volume
2
Category
Article
ISSN
0935-6304

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✦ Synopsis

Abstract

Gel chromatographic behavior of 8‐hydroxyquinoline (oxine, abbreviated HOx) complexes of zinc, copper, aluminum, gallium and indium has been investigated on thin layers of Styragel 60A and Merckogel OR‐PVA 2000 mostly in chloroform and p‐dioxan media. Except for the stable Cu(Ox)~2~, the other oxinates exhibit either hydration or decomposition in gel‐solvent‐solute systems, which leads to strong retention or tailing on gel layers. An excess of 8‐hydroxyquinoline present in solvents allows the oxinates to be stabilized, so that well‐defined compact spots come out and migrate. For the Zn(Ox)~2~ the formation of a self‐adduct is strongly suggested on the basis of gel chromatographic behavior. Elution with the solvent containing pyridine also yields evidence of the adduct formation of zinc oxinate‐nitrogen base.

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