  We study a simple and versatile diatomic potential function coined to prevent
crystallization in supercooled liquids. We show that the corresponding liquid
does not crystallize even with very long simulation runs at the lowest
temperature that we can access with ergodic simulations. The medium displays
the usual features of supercooled materials and a non-Arrhenius dependence of
the diffusion coefficient and alpha relaxation time with temperature. We also
observe the breakdown of the Stokes-Einstein relation at low temperatures.
