Gas-chromatographic identification of chloro- and bromo-substituted anilines by their retention indices

Gas chromatography retention indices were experimentally determined for 27 chloro- and bromo-substituted anilines on the standard non-polar polydimethylsiloxane stationary phase; a procedure for the estimation of retention indices for any other species of the studied class was proposed. The computational algorithm is based on a modified additive scheme equivalent to the assembly of the target structure from simpler molecules characterized by retention indices, using their addition and subtraction.