Crystal structures and supra­molecular features of 9,9-dimethyl-3,7-di­aza­bicyclo­[3.3.1]nonane-2,4,6,8-tetra­one, 3,7-di­aza­spiro­[bi­cyclo­[3.3.1]nonane-9,1′-cyclo­penta­ne]-2,4,6,8-tetra­one and 9-methyl-9-phenyl-3,7-di­aza­bicyclo­[3.3.1]nonane-2,4,6,8-tetra­one di­methyl­formamide monosolvate

Acta Crystallographica Section E
Acta Crystallographica
Section E CRYSTALLOGRAPHIC COMMUNICATIONS

IUCr IT WDC

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Figure 5
The crystal structure of (II)

, demonstrating the H-bonded zigzag-like ribbons propagating toward [010]. Dashed lines indicate the intermolecular N—H⋯O hydrogen bonds.

CRYSTALLOGRAPHIC
COMMUNICATIONS

ISSN: 2056-9890

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