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Figure 3
Visualization of crystal structures of (a) RUB-5 viewed along [−1−10], [0−10], (b) RUB-6 (illustrated without organic molecules) viewed along [0−10], (c) β-quartz viewed along [−1−1−1] and [00−1], and (d) α-quartz viewed along [−1−1−1]. LLBUs (labels α, β, γ) and subunits (labels a, b, a′, b′) are marked. The relations between layer γ and layer α are illustrated in (a) and (b).

IUCrJ
Volume 7| Part 3| May 2020| Pages 522-534
ISSN: 2052-2525
https://doi.org/10.1107/S2052252520003991