Prediction of the TLC R-M values of selected hydrocarbons and their quinones

Selected polynuclear aromatic hydrocarbons (PAH) and their quinones have be en separated by TLC on silica gel. The R-M values of the compounds in all t he mobile phases investigated could be correlated with the dipole moments o f the mobile phases (mu(mph)), with the net electron charges on the individ ual atoms, with the number of carbon atoms in the molecule, with the total dipole moments of the molecules, and with numerical values of the topologic al indexes: M, degrees chi,(1)chi, (2)chi, degrees chi(y) (1)chi(y), (2)chi (y), W, I-B, A, degrees B, B-1, and chi(012) The most accurate prediction of the R-M values of the compounds investigate d was achieved by use of five-parameter equations relating the dipole momen t of mobile phases (mu(mph)), the topological indexes degrees B, B-1, and t wo other parameters.