Molecular Topology 22.1 Novel Connectivity Descriptors Based on Walk Degrees

An algorithm for generating novel connectivity topological descriptors, denoted SP (subgraph property), is proposed and exemplified for P being the number of vertices N, walk degree wt\u27e), Randić index X, and Wiener index W. SP indices based on wt\u27e) and x wt\u27e) (Razinger\u27s extension of x index) are tested for correlation with some physico-chemical properties of octane isomers