Organomercuric Bonded Phase for High Performance Liquid Chromatographic Separations of -Electron-, Sulfur-, Oxygen-, and Nitrogen-Containing Compounds

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Abstract
A high performance liquid chromatography (HPLC) sorbent based on the organomercuric cation R-Hg + chemically anchored to silica gel is discussed. The organomercuric bonded phase was found capable of forming complexs with a wide variety of compounds without forming irreversible bonds. Separation of polycyclic aromatic hydrocarbons (PAH) based on the number of fused rings was achieved for up to seven-ring structures. Alkyl and phenyl substitution of the parent PAH molecules did not change or made minor contributions to changes in retention. Therefore, the sorbent was capable of giving class separations. Selectivity for sulfur, oxygen, and nitrogen donor ligands was observed and applied to the separation of aza- and diaza-arenes, quinones, furanes, and thiophenes. Both normal and reversed-phase eluents were found to be useful with this new column material. Retentions achieved decreased with mobile phases which exhibited greater chemical affinity for the mercury atom.

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