Fig. 2: Building blocks. | Nature Communications

Fig. 2: Building blocks.

From: Topological dual and extended relations between networks of clathrate hydrates and Frank-Kasper phases

Fig. 2

a The basic building block: 512 cage and hexagonal rings are displayed in blue and red lines, respectively, and their respective centers are cyan and yellow spheres. The green and orange lines are auxiliary lines for illustrating the 3D structure. The images in (b) show its projection view along other directions. The basic building block is slightly different in different structures, see Supplementary Note 2. c Three primitive connectivities of the basic building blocks, PC1–3. d 3D structure of CBD, some 512 cages are hidden for clarity. e Pyramid building block. f R-A building block. g R-B building block. The gray lines manifest the six-fold symmetry. h–k Projection view along c direction for corresponding (d–g) structures.

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