Natalija Zajc, Odon Planinšek, Stane Srčič*
Faculty of Pharmacy, University of Ljubljana, Aškerčeva 7, SI-1000 Ljubljana, Slovenia
 
 

ABSTRACT

The SWA(m,n) indices derived from the vmdn matrix raise expectations that at least two groups of them might be good branching indices of BIA type. The indices of one of these groups indicate that a peripherally substituted alkane is more branched than a centrally substituted one, whereas the indices of the other group indicate the reverse. Some of the SWA(m,n) indices correlate well, having ?r? > 0.99, with physicochemical properties ? and Tc/Pc. Several ones have ?r? > 0.9 with BP/Tc, Tc2/Pc, C, ?Hf?g, Pc, and ?Hv.