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. 2018 Aug 6;9:3080. doi: 10.1038/s41467-018-05503-y

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 3 — Structural insight into the shape memory phenomenon seen in X-pcu-1-Zn-3i-δ. The shape memory phase exhibits less strain (above and middle), shorter network-network contacts (below) and average repeat distances (above) than the other two phases. Threefold interpenetrated networks are coloured green, maroon, and blue. The bond angles and bond lengths are represented by red dashed (middle row) and yellow dashed lines (bottom row)