Vukičević and Gašperov, in 2010, introduced a potentially useful topological index known as the Symmetric division deg (SDD) index. They showed that it best correlates when predicting the total surface area of polychlorobiphenyls (PCB). In this article, we analyze the relationship between the SDD index with other physico-chemical properties of PCBs, such as log water solubility, octanol-water partition ratio, with the aid of computers.
We also compare it with other well-known vertex degree-based (VDB) indices. We show that the SDD-index has a better correlation ability with a value of 0.9749 for log-water solubility and 0.9475 for octanol-water partition coefficient. We also identify the expected values for these two properties of PCBs whose experimental values are not available.
Mathematics Subject Classification (2010) 92E10 · 05C12 · 05C05