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Figure 2
Schematic representation of the crystal packing of (a) SPG, (b) SPGH form I and (c) SPGH form II. Hydrogen bonding interactions are in green, selected hydrogen atoms have been omitted for clarity.

IUCrJ
Volume 6| Part 4| July 2019| Pages 630-634
ISSN: 2052-2525
https://doi.org/10.1107/S2052252519004755