Crystal structures of four isomeric hydrogen-bonded co-crystals of 6-methyl­quinoline with 2-chloro-4-nitro­benzoic acid, 2-chloro-5-nitro­benzoic acid, 3-chloro-2-nitro­benzoic acid and 4-chloro-2-nitro­benzoic acid

Gotoh, K.; Ishida, H.

doi:10.1107/S2056989020013134

Acta Crystallographica Section E
Acta Crystallographica
Section E CRYSTALLOGRAPHIC COMMUNICATIONS

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Figure 8
A packing diagram of (IV)

, showing the column structure formed via the π–π interactions (magenta dashed lines). H atoms not involved in the O—H⋯·N/O⋯H—N hydrogen bonds (green dashed lines) are omitted for clarity. Cg1, Cg2 and Cg3 are the centroids of the C1–C6, N2/C8–C11/C16 and C11–C16 rings, respectively. Symmetry codes: (iii) x − $[{1\over 2}]$ , −y + $[{1\over 2}]$ , z − $[{1\over 2}]$ ; (iv) x + $[{1\over 2}]$ , −y + $[{1\over 2}]$ , z − 1/2: (v) x − $[{1\over 2}]$ , −y + $[{1\over 2}]$ , z + $[{1\over 2}]$ ; (vi) x + $[{1\over 2}]$ , −y + $[{1\over 2}]$ , z + $[{1\over 2}]$ .

CRYSTALLOGRAPHIC
COMMUNICATIONS

ISSN: 2056-9890

Volume 76| Part 11| November 2020| Pages 1701-1707

https://doi.org/10.1107/S2056989020013134

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