On the Eigenvalues of Rhomboidal C4C8(R)[n; n] Nanotori

Abstract

A C4C8 net is a trivalent decoration made by alternating squares C4 and octagons C8. It can cover either a cylinder or a torus. In this paper, we study the adjacency spectrum of rhomboidal C4C8 tori. We also give lower and upper bounds for a chemical quantity, namely Estrada index, for a C4C8 net.