Eight new crystal structures of 5-(hy­droxy­meth­yl)uracil, 5-carb­oxy­uracil and 5-carb­oxy-2-thio­uracil: insights into the hydrogen-bonded networks and the predominant conformations of the C5-bound residues

Seiler, V.K.; Hützler, W.M.; Bolte, M.

doi:10.1107/S2053229616004861

Acta Crystallographica Section C
Acta Crystallographica
Section C STRUCTURAL CHEMISTRY

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Figure 17
(a) The substructure used for a CSD search (Groome & Allen, 2014) on the torsion angle ω in structures of six-membered cyclic compounds containing a carboxy group in the β-position with respect to a carbonyl group. (b) A histogram showing the number of occurrences versus the value of the torsion angle ω in this CSD search. For comparison, the values of ω in (II)–(VIII) are indicated as black lines at the top.

STRUCTURAL
CHEMISTRY

ISSN: 2053-2296

Volume 72| Part 5| May 2016| Pages 379-388

doi:10.1107/S2053229616004861

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