Three hexa­hydro­pyrido­pyrimidine-spiro-cyclo­hexane­triones: supra­molecular structures generated by O—H⋯O, N—H⋯O, C—H⋯O and C—H⋯π hydrogen bonds, and π–π stacking interactions

Low, J.N.; Ferguson, G.; Cobo, J.; Nogueras, M.; Cruz, S.; Quiroga, J.; Glidewell, C.

doi:10.1107/S0108270104009539

Acta Crystallographica Section C
Acta Crystallographica
Section C STRUCTURAL CHEMISTRY

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Figure 4
Part of the crystal structure of (I

), showing the formation of a (10 $[\overline 1]$ ) sheet containing four types of centrosymmetric ring. For clarity, H atoms bonded to atoms not involved in the motifs shown have been omitted. Atoms marked with an asterisk (*), an ampersand (&), a plus sign (+), an `at' sign (@), a dollar sign ($) or a hash (#) are at the symmetry positions (1 − x, 1 − y, 1 − z), (1 + x, y, 1 + z), (1 − x, 2 − y, 1 − z), (x, 1 + y, z), (−x, 2 − y, −z) and (−x, 1 − y, −z), respectively.

STRUCTURAL
CHEMISTRY

ISSN: 2053-2296

Volume 60| Part 6| May 2004| Pages o438-o443

doi:10.1107/S0108270104009539

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