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 3
A stereoview of part of the crystal structure of (IV)

, showing the formation of a chain of centrosymmetric hydrogen-bonded rings along [010] built from C—H⋯O and C—H⋯π hydrogen bonds. For the sake of clarity, the half-occupancy ethanol molecules and H atoms not involved in the motifs shown have been omitted.

STRUCTURAL
CHEMISTRY

ISSN: 2053-2296

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

doi:10.1107/S0108270108036937

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