INFLUENCE OF INDUCTIVE EFFECT IN SOME HOMOLOGOUS ORGANIC LIQUIDS ON THE KERR CONSTANT VALUES

We report the values of electro optic Kerr constant of liquids belongi ng to Carbonyl (Ketone and Aldehyde) and Nitrile series at lambda = 63 2.8nm. These investigations have been carried out for the first time i n the liquids, Methyl n propyl ketone, Methyl isopropyl ketone, Methyl isobutyl ketone, Propionaldehyde, Butyraldehyde, Propionitrile and Bu tyronitrile belonging to these homologous series. We have observed a d ecreasing trend in Kerr constant values with an increasing chain lengt h by a CH2 intervening group in all these series. The variations in th e inductive effect arising from different substituents in the molecula r structures of the liquids are used to interpret the decreasing trend in the values of the Kerr constant.