Comment on "Power Law Distribution Concerning Absolute Free Energies of Linear Sulfur Chains, Polythiazyls, Polyisoprenes, Linear trans-Polyenes, and Polyynes".

Recently, an analysis of some linear molecular chains showed that the molecular energy grows as a linear function of the number of fragments in molecules of the form A-Bn-C, where A, B, and C are chemical fragments. Additionally, the difference in the energy per fragment of two consecutive molecular chains was fitted into a power law form showing similar exponents close to 2. In this contribution, a natural expression, different from the power law, is presented for the previously mentioned difference.