Abstract
Molecular structure and retention behaviour. XII. Refention behaviour of alkylnaphthalenes by gas-liquid and by gas-solid chromatography The retention indices of 1-alkyl- and 2-alkylnaphthalenes, of isomeric dimethylnaphthalenes, of some trimethylnaphthalenes and methylazulenes have been determined by gas—liquid chromatography (GLC) on glass capillaries of different polarity (methylsilicone OV-1, Ucon LB 550 X and Ucon 50 HB 280 X polar) and by gas—solid chromatography (GSC) on graphitized thermal carbon black, respectively. The retention within homologous series of straight chain 1-alkyl- and 2-alkylnaphthalenes, of isomeric butylnaphthalenes and dimethylnaphthalenes is discussed by means of homomorphic factors and index differences and compared with corresponding values of alkylbenzenes. The different retention behaviour of the isomeric dimethylnaphthalenes by GLC and by GSC can be described by an incremental approach.
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