The eccentric connectivity index of armchair polyhex nanotubes


  • Mahboubeh Saheli Institute of Nanoscience and Nanotechnology, University of Kashan, Kashan
  • Ali Reza Ashrafi Institute of Nanoscience and Nanotechnology, University of Kashan, Kashan



eccentric connectivity index, armchair nanotube


The eccentric connectivity index ξ(G) of the graph G is defined as ξ(G) = Σu∈V(G) deg(u)ε(u) where deg(u) denotes the degree of vertex u and ε(u) is the largest distance between u and any other vertex v of G. In this paper an exact expression for the eccentric connectivity index of an armchair polyhex nanotube is given.


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How to Cite

Saheli, M., & Ashrafi, A. R. (2010). The eccentric connectivity index of armchair polyhex nanotubes. Macedonian Journal of Chemistry and Chemical Engineering, 29(1), 71–75.



Theoretical Chemistry