Simulation
A 2-D square lattice in the y-z plane with 10 sites along each axis was used. The linear molecules were ordered along the x-axis with the centers of the atoms located at the cites of a triangular lattice and identified by the Cartesian coordinates, (x, y, z) of their centers. Such a system formed a monolayer of the molecule of interest. Changes in the position of components of each molecule were simulated using the Metropolis Monte Carlo (MMC) algorithm with spheres as described above.