In chemical science, the topological index computation can help to determine chemical, biological, pharmacological, toxicological and technically relevant information on molecules. In this paper, we compute the leap eccentric connectivity index (LEI), eccentric connectivity index (ECI) and total eccentricity for the transformation graphs of a path P_n (hydrogen depleted alkanes). Also, we establish the relations between them.

eccentricity, leap eccentric connectivity index, degree of a vertex, generalized transformation graphs.