简介:AnoveltopologicalindexWFisdefinedbythematricesX,WandLasWF=XWL.ThetopologicalindexWFbasedonthedistance-relatedmatrixofmoleculargraphsisusedtocodethestructuralenviron-mentofeachatom-typeinamoleculargraph.GoodQSPRmodelshavebeenobtainedforstandardformationen-thalpyofmethylhalides.Theresultindicatesthattheideaofusingmultiplematricestodefinethedistance-relatedmatrixtopologicalindexisvalid.