view article
Figure 1
Mol­ecular structures of the title compounds (I)–(VI), showing the atom-numbering scheme. Displacement ellipsoids are drawn at the 50% probability level and H atoms are shown as small spheres of arbitrary radii. In the hydrogen bonds between the carb­oxy O atom and the base N atom of compounds (III)[link] and (IV)[link], the H atoms are each disordered over two positions. The nitro group in (III)[link] is disordered around the N1—C6 bond. Dashed lines in (I)[link], (II)[link], (V)[link] and (VI)[link] indicate the N—H⋯O, O—H⋯N and C—H⋯O hydrogen bonds.

Journal logoCRYSTALLOGRAPHIC
COMMUNICATIONS
ISSN: 2056-9890
Volume 77| Part 11| November 2021| Pages 1144-1152
https://doi.org/10.1107/S2056989021010896
Follow Acta Cryst. E
Sign up for e-alerts
E-alerts
Follow Acta Cryst. on Twitter
Twitter
Follow us on facebook
Facebook
Sign up for RSS feeds
RSS