“…Design of crystalline materials with target structure and properties is carried out via the control of a macro-object at the molecular level. [1][2][3][4][5][6][7][8][9][10][11] Components for the (co)crystals are selected by taking into account inherent patterns of intermolecular interactions. In the design of organic molecular co-crystals, directed intermolecular interactions such as the hydrogen bond (H-bond), Hal⋯Hal bond, π⋯π and p⋯π electron contacts, etc.…”