Anhydrous versus hydrated N4-substituted 1H-pyrazolo[3,4-d]pyrimidine-4,6-diamines: hydrogen bonding in two and three dimensions

Trilleras, J.; Quiroga, J.; Cobo, J.; Marchal, A.; Nogueras, M.; Low, J.N.; Glidewell, C.

doi:10.1107/S0108768108019903

Acta Crystallographica Section B
Acta Crystallographica
Section B STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS

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Figure 5
Part of the crystal structure of (IV) showing the formation of a chain of edge-fused R₂²(8) rings parallel to [100]. For the sake of clarity the H atoms bonded to C atoms have been omitted. The atoms marked with an asterisk (*), a hash (#) and an ampersand (&) are at the symmetry positions ( $[-{1\over 2}+ x, {1\over 2} - y, 1 - z]$ ), ( $[-{1\over 2} + x, {1\over 2} - y, 1 - z]$ ) and (1 + x, y, z), respectively.

STRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS

ISSN: 2052-5206

Volume 64| Part 5| September 2008| Pages 610-622

doi:10.1107/S0108768108019903

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