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Some experimental conjectures on energy and Estrada index of VC5C7[4p,8] nanotubes

A. R. ASHRAFI1,* , B. BAZIGARAN1, M. SADATI1

Affiliation

  1. Institute of Nanoscience and Nanotechnology, University of Kashan, Kashan 87317-51167, I. R. Iran

Abstract

Let E(VC5C7 [4p,8]) and EE(VC5C7 [4p,8]) denote the energy and Estrada index of VC5C7 [4p,8] nanotube, where p denotes the period of this C5C7 nanotube. In this paper some calculations are given by which it is possible to suggest conjectures about energy and Estrada index of this nanotube. We conjectured E(VC5C7 [4p,8]) = 47.4018 + 47.3(p − 1) and EE(VC5C7 [4p,8]) = 99.3238 + 99.2(p − 1).

Keywords

VC5C7 [4p,8] nanotube, energy, Estrada index.

Citation

A. R. ASHRAFI, B. BAZIGARAN, M. SADATI, Some experimental conjectures on energy and Estrada index of VC5C7[4p,8] nanotubes, Optoelectronics and Advanced Materials - Rapid Communications, 3, 10, October 2009, pp.1080-1082 (2009).

Submitted at: Aug. 28, 2009

Accepted at: Oct. 2, 2009