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 6
A partial packing diagram of (III)

viewed along the a axis, showing the ribbon structure formed by the O—H⋯N/O⋯H—N and C—H⋯O hydrogen bonds (green dashed lines), and C—H⋯π interactions (magenta dashed lines). H atoms not involved in the intermolecular interactions and the disordered O atoms of the minor component of the nitro group are omitted for clarity. [Symmetry codes: (i) x, −y + $[{1\over 2}]$ , z + $[{1\over 2}]$ ; (ii) x, y, z − 1; (iii) x, −y + $[{1\over 2}]$ , z − $[{1\over 2}]$ .]

CRYSTALLOGRAPHIC
COMMUNICATIONS

ISSN: 2056-9890

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

https://doi.org/10.1107/S2056989021010896

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