Computation of certain topological indices of nanotubes covered by C5 and C7

Sakander Hayat, Muhammad Imran

Research output: Contribution to journalArticlepeer-review

73 Citations (Scopus)


A topological index is a numeric quantity which represents the structure of a graph. A molecular/chemical graph is hydrogen depleted chemical structure in which vertices denote atoms and edges denote the bonds. There are certain types of topological indices like distance based, degree based and counting related topological indices. Among them degree based topological indices are of much importance due to their chemical significance. Carbon nanotubes, a type of fullerene, have potential in fields such as nanotechnology, electronics, optics, materials science and architecture. In this article, we compute atom-bond connectivity (ABC), geometric-arithmetic (GA), Randi c′ and zagreb indices of VC5C7[p,q], HC5C7[p,q] and SC5C7[p,q] nanotubes. We also compute ABC4 and GA5 indices for these nanotubes.

Original languageEnglish
Pages (from-to)533-541
Number of pages9
JournalJournal of Computational and Theoretical Nanoscience
Issue number4
Publication statusPublished - Apr 1 2015
Externally publishedYes


  • Atom-bond connectivity (ABC) index
  • Geometric-arithmetic (GA) index
  • HCC[p,q] nanotube
  • SCC[p,q] nanotube
  • VCC[p,Q] nanotube

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics
  • Computational Mathematics
  • Electrical and Electronic Engineering


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