AbstractThe Tridentate chelating, system present in Salicylidineo‐amino benzoic acid was used for complexation with Cu (11), Ni (11), Co (11) and Pd (11). The thin‐layer chromatographic (TLC) detection and separation of these complexes on Silica gel (G) layers was studied. The coloured spots of the complexes were quite visible without any visualizing agent. A maximum of four complexes could be resolved and identified. The coloured zones were eluted with solvent and characterise by elemental analysis and spectral studies. Colour of the complexes at λmaxwas meas