Figure 4
(a) Perspective view of the elementary layer unit cell , , . The alternation of orientation chains along and is symbolized by A/B indices. H atoms have been omitted for simplicity. (b) Projection of the unit cell along showing the mesh-like pattern formed by two successive chain orientations A and B. HMT molecules have been omitted for clarity. (c) Projection of the unit cell along showing a similar mesh-like pattern. |