Qualitative ion-pair reversed-phase thin-layer chromatography

摘要: Abstract The chromatographic properties of 132 compounds were investigated in two ion-pair systems on reversed-phase thin-layer plates. consisted tetrabutylammonium and tetramethylammonium halides for the anionic mode sodium heptyl methyl sulphonates cationic mode. Carboxylic sulphonic acids yielded significant positive Δ R F values system. In system most carboxylic not significantly different from zero, but negative zero. For magnitude depended nature substituent also substitution pattern. effect, appeared to be directly related extent which ionogenic group contributed hydrophilic character molecule. Aromatic amines no zero either Of aliphatic δ positive, their increasing primary toward tertiary amines. These amines, except some ones, trailed p ]It is concluded that qualitative chromatography can helpful identification functional groups unknown compounds.