Iminoketonate complexes of Cu(II) chemically bonded to silica in gas chromatography Original Research Article

Complexes of Cu(II) chemically bonded to silica surface are studied and used in gas chromatography. Copper(II) chloride in a tetrahydrofuran solution was bonded to the support via iminoketonate groups. The packing obtained in such a way was investigated to evaluate its usefulness in the analysis of aliphatic and aromatic halogenated hydrocarbons as well as ethers and thioethers. A number of retention parameters was determined (retention factor – k, specific retention volume – Vg, molecular retention index – ΔMe) which enabled to characterize specific interactions between bonded metal and adsorbate molecules. A packing containing no bonded metal was also investigated and served as a reference. Attempts were also made to separate some mixtures of the nucleophilic compounds.