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The topological connectedness and experimentally determined boiling point for each of a series of halogenated normal alkane molecules were used to derive fractal dimensionalities of these molecules by a simplified version of the method of Rouvray and Pandey. The results, which relate to the time-averaged molecular conformations of the species in the bulk liquid phase, were then used to obtain estimates of the flexibility of the molecules in question. The effects of the halogen atoms are pronounced and reveal a number of interesting trends. Such analysis is of particular value in the medical context, since perfluorinated alkanes and other perfluorinated species are now being employed widely in medical operations as substitutes for body fluids.

Various topological factors governing the electronic properties of infinitely large periodic polycyclic benzenoids are analyzed graph-theoretically by drawing the density of states (DS). The existence or non-existence of NBMO's in the hypothetical cyclic dimer of the network are shown to be crucial for the profile of DS.

Various topological factors governing the electronic properties of infinitely large periodic polycyclic benzenoids are analyzed graph-theoretically by drawing the density of states (DS). The existence or non-existence of NBMO's in the hypothetical cyclic dimer of the network are shown to be crucial for the profile of DS.