An analysis of the molecular dynamics (MD) of the biphenyl molecular complex in an acidic solution has been
performed. The aim of this work is to study the influence of the electrostatic (Coulomb) forces on the dynamical and
structural behavior of the biphenyl molecules interacting with the HNO3 solvent. The temperature and energy
characteristics and the phase transition of the biphenyl molecule point to the existence of a critical charge number for the
HNO3 acid particles that control the interaction process.