Abstract
High Pressure Liquid Chromatography (HPLC), utilizing adsorption on microparticulate silica, provides analytical resolution of copper, nickel, and palladium chelates of tetradentate β-ketoimines. The chelates investigated are those of non-fluorinated, semi-fluorinated and fluorinated ligands derived from condensation of acetylacetone and trifluoroacetyl-acetone with ethylenediamine, 1,2-diaminopropane and 2,3-diaminobutane. Novel chelates are described for the latter ligand group with various geometrical isomers being prepared. HPLC separations are described related to the increase in extent of chelate fluorination, the nature of the chelated metal and the geometrical isomer forms of the complexes.
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