On the preferred mutual orientation of aromatic groups in organic condensed media

摘要: Abstract The relative orientation of benzene and aromatic ring planes in condensed phases organic compounds is examined. Directional preferences are analyzed terms electrostatic dispersion-repulsion empirical formulations. atomic charge model reviewed, particularly the definition charges their use potentials. Data presented on distribution interatomic contact distances rings hydrocarbon crystals; interplanar angles between 10° 30° not preferred, but entirely forbidden. forces simple to model, interplay for complex molecules easily understood.