2-(4-Bromophenyl)-1,2-dihydropyrimido[1,2-a]benzimidazol-4(3H)-one and 4-(4-methylphenyl)-3,4-dihydropyrimido[1,2-a]benzimidazol-2(1H)-one form hydrogen-bonded base-paired dimers

Low, J.N.; Cobo, J.; Insuasty, B.; Nogueras, M.; Salcedo, A.; Sánchez, A.

doi:10.1107/S0108270101021564

Acta Crystallographica Section C
Acta Crystallographica
Section C STRUCTURAL CHEMISTRY

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Figure 5
A view of the ribbon structure in (Vb); only the major component is shown. H atoms not involved in the hydrogen bonding have been omitted for clarity. The molecule labelled * is at (2 − x, 1 −y, 1 − z), that labelled # is at (x, y − 1, z) and that labelled $ is at (2 − x, 2 − y, 1 − z).

STRUCTURAL
CHEMISTRY

ISSN: 2053-2296

Volume 58| Part 2| January 2002| Pages o125-o128

doi:10.1107/S0108270101021564

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