Role of pKa in establishing the crystal structures of six hydrogen-bonded compounds of 4-methyl­quinoline with different isomers of chloro- and nitro-substituted benzoic acids

Ishida, H.

doi:10.1107/S2056989021010896

Acta Crystallographica Section E
Acta Crystallographica
Section E CRYSTALLOGRAPHIC COMMUNICATIONS

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Figure 11
A packing diagram of (VI)

, showing the ribbon structure formed via the π–π interactions (magenta dashed lines), and the N—H⋯O and C—H⋯O hydrogen bonds (green dashed lines). H atoms not involved in the hydrogen bonds are omitted for clarity. Cg2 and Cg3 are the centroids of the N2/C8–C11/C16 and C11–C16 rings, respectively. [Symmetry codes: (ii) −x + $[{3\over 2}]$ , −y + $[{3\over 2}]$ , −z + 1; (iii) −x + $[{3\over 2}]$ , −y + $[{1\over 2}]$ , −z + 1.]

CRYSTALLOGRAPHIC
COMMUNICATIONS

ISSN: 2056-9890

Volume 77| Part 11| November 2021| Pages 1144-1152

https://doi.org/10.1107/S2056989021010896

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