Novel information theoretic topological index Ik for unsaturated hydrocarbons

Based on chemical signed graph theory proposed by Lee et al. the novel information theoretic topological index, Ik, is derived from the edge signed graphs. Subsequently, based on the definition of Ik, few other properties based information theoretic indices such as, bonding information index, Ib, non-bonding information index, In, and anti-bonding information index, Ia, are also evaluated. Moreover, the index, Ib and Ia are found to be useful in QSAR modeling of unsaturated hydrocarbons.