ქიმიის ტერმინთა განმარტებითი ლექსიკონი

Columnar mesophase characterised by a liquid-like molecular order along the columns, in which the columns are arranged in a rectangular packing.

Note 1: See Figs (a–c) for illustrations of molecular arrangements in columnar rectangular mesophases.

Note 2: The average orientation of the planes of the molecular discs is not necessarily normal to the column axes.

Note 3: Depending on the plane space-group symmetries, three rectangular mesophases are distinguished (See Fig. a–c).

Note 4: There also exist chiral columnar rectangular mesophases, with the molecular discs tilted periodically in the columns and with the tilt directions changing regularly down the columns.

Fig. Plan views of the two-dimensional lattice of the columns in columnar rectangular to (c) and oblique (d) mesophases. Ovals indicate the planes of the molecular discs. Plane space group symmetries in the projection of the International System are: (a) P2₁/a; (b) P2/a; (c) C2/m; (d) P₁.