NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2021, 12 (3), P. 263–270
The F-index and coindex of V-Phenylenic Nanotubes and Nanotorus and their molecular complement graphs
Mohammed S.Y. Alsharafi – Graduate School of Natural and Applied Sciences, Yildiz Technical University, Istanbul, Turkey; email@example.com
Abdu Q. Alameri – Department of Biomedical Engineering, University of Science and Technology, Sana’a, Yemen; firstname.lastname@example.org
The forgotten topological index was defined to be used in the analysis of chemical structures which often appear in drug molecular graphs. In this paper, we studied the F-index and F-coindex for certain important physico chemical structures such as V-Phenylenic Nanotube V PHX[m; n] and V-Phenylenic Nanotorus V PHY [m; n] and their molecular complement graph. Moreover, we computed F-polynomial of the V-Phenylenic Nanotubes and Nanotorus. These explicit formulae can correlate the chemical structure of molecular graphs of Nanotubes and Nanotorus to information about their physicochemical structure.
Keywords: F-index, F-coindex, V-Phenylenic Nanotubes and Nanotori, molecular graph, molecular complement graph.