Four N7-benzyl-substituted 4,5,6,7-tetra­hydro-1H-pyrazolo[3,4-b]pyri­dine-5-spiro-1′-cyclo­hexane-2′,6′-di­ones as ethanol hemisolvates: similar mol­ecular constitutions but different crystal structures

Cruz, S.; Trilleras, J.; Cobo, J.; Low, J.N.; Glidewell, C.

doi:10.1107/S0108270108036937

Acta Crystallographica Section C
Acta Crystallographica
Section C STRUCTURAL CHEMISTRY

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Figure 1
The independent molecular components in (a) compound (I)

, (b) (II)

, (c) (III)

and (d) (IV)

. The ethanol components all have 0.5 occupancy, so that only half of the heterocyclic molecules are linked to ethanol molecules via hydrogen bonds (see Comment). Displacement ellipsoids are drawn at the 30% probability level.

STRUCTURAL
CHEMISTRY

ISSN: 2053-2296

Volume 64| Part 12| November 2008| Pages o637-o642

doi:10.1107/S0108270108036937

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