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Figure 5
The compatible packing arrangements of the two kinds of structural motifs: (a) the ribbon of rings and the twisted double chains in the structure of form A: (b) the tubular channels running along the a axis formed by alternate packing of rings and chains in a parallel fashion in form A.

IUCrJ
Volume 1| Part 5| August 2014| Pages 318-327
ISSN: 2052-2525
doi:10.1107/S2052252514015966