T. Cardwell, T. H. Lorman, Zhao Feng
1986
Citations
0
Influential Citations
4
Citations
Journal
Journal of Chromatography A
Abstract
Abstract Electrophilic brominaton and nitration of rhodium(III), cobalt(III) and chromium(III) acetylacetonates under limiting conditions lead to the formation of mono-, bi- and tri-substituted derivatives. The individual complexes and mixtures of the complexes have been investigated to determine their suitability for analysis by gas chromatography (GC) and high-performance liquid chromatography (HPLC). The cobalt(III) complexes were found to be thermally unstable and hence unsuitable for GC, whereas the rhodium and chromium complexes were readily separated on an OV-101/Chromosorb W column. Analysis of reaction mixtures containing labile or thermally unstable complexes, especially the nitrated acetylacetonates of cobalt- (III), have been carried out using normal-phase HPLC.