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Figure 4
(a) The structure of the silicate layer of RUB-18 (Vortmann et al., 1997BB66), viewed perpendicular to the layer along the c axis. (b) Two adjacent silicate layers of the RUB-18 structure, with the hydrated sodium ions in the inter­layer space. (c) The proposed structure of the C16NMe3+ surfactant-templated layered silicate material based on PXRD and solid-state NMR data. The curved dashed lines illustrate how the silicate layers may be distorted. From Brouwer et al. (2017BB10). Used with permission.

IUCrJ
Volume 4| Part 4| July 2017| Pages 350-359
ISSN: 2052-2525