[en] The molecule SF₆ is treated as a classical dynamical system obeying Newton's laws of motion. This report describes how the current SF₆ potential is determined. The initial approach is described in terms of a pair of Lennard--Jones potential functions with arbitrary coefficients. A method for determining the potential constants is developed. The SF₆ spectrum was reproduced by including three-body forces. By specifying certain parameters such as the 1/r⁶ F-F constant and the total dissociation energy of the molecule, a satisfactory global potential was obtained. The laser-molecule interaction energy was developed