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Figure 8
[C7H12N2]PbI4 (1944786) showing (a) a+/a+ tilts around a and (b) octahedral distortion (not a tilt) relative to b.

IUCrJ
Volume 8| Part 4| July 2021| Pages 485-513
ISSN: 2052-2525
https://doi.org/10.1107/S2052252521005418