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Figure 3
A schematic diagram of a Pb2+ ion shifting along the 〈110〉 direction. The motion is towards O12, away from O1 and largely perpendicular to the remaining atoms (O7 is out of the plane of the picture).

IUCrJ
Volume 3| Part 1| January 2016| Pages 20-31
ISSN: 2052-2525
doi:10.1107/S2052252515018722