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Najmeh Soleimani, Esmaeel Mohseni, Fahimeh Rezaei and Fatemeh Khati

Abstract

In this paper, we focus on the structure of Polycyclic Aromatic Hydrocarbons (PAHs) and calculate the Omega and its related counting polynomials of nanostructures. Also, the exact expressions for the Theta, Sadhana, Pi, Hyper Zagreb and Forgotten Zagreb indices of linear [n]-Tetracene, V-Tetracenic nanotube, H-Tetracenic nanotube and Tetracenic nanotori were computed for the first time. These indices can be used in QSAR/QSPR studies.

Open access

Najmeh Soleimani, Shila Banari Bahnamiri and Mohammad Javad Nikmehr

Abstract

In this paper, five degree based topological indices, the first Zagreb (M 1), second Zagreb (M 2), first multiple Zagreb (PM 1), second multiple Zagreb (PM 2), and the hyper Zagreb (HM) indices of two types of dendrimers are studied. In addition, two distance based topological indices, the total eccentricity (θ) and eccentric connectivity (ξc) indices of these dendrimers are computed.