Detection of aromatic nitro compounds by means of their pi-complexes with N,N-diethylaniline.
The pi-complexes of nitro-aromatics are found to be more intensely coloured in the solid state than in solution. Thus nitro compounds, on spraying with N,N-diethylaniline on paper or thin-layer plates, yield yellow, red, brown or violet colours when the solvent is evaporated. The detection limit is 1-5 mug. Several donor groups do not vitiate the test when present as substituents.
Verma
K K
KK
Department of Chemistry, University of Jabalpur, Jabalpur 482001, India.
Dubey
S K
SK