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Figure 3
(a) The one-dimensional chain of Form II of Compound-A propagating through the N—H⋯N (pyridine) synthon. (b) Packing of molecules along the a and b axes (Form II). (c) Packing of molecules along the a and c axes (Form III). (d) Overlay of the Form I (green), Form II (blue) and Form III (red, high-temperature polymorph) crystal structures (Compound-A).

IUCrJ
Volume 4| Part 6| November 2017| Pages 812-823
ISSN: 2052-2525
https://doi.org/10.1107/S2052252517014658