2:1 Complexes of 2-chloro-4-nitro­benzoic acid and 2-chloro-5-nitro­benzoic acid with pyrazine

2:1 Complexes of 2-chloro-4-nitro­benzoic acid and 2-chloro-5-nitro­benzoic acid with pyrazine

2‐Chloro‐4‐nitro­benzoic acid and 2‐chloro‐5‐nitro­benzoic acid form O—H⋯N hydrogen bonds with pyrazine to afford 2:1 complexes of 2C7H4ClNO4·C4H4N2, (I) and (II), respectively, that are located on inversion centers. The 2C7H4ClNO4·­C4H4N2 units in both complexes are connected by weak C—H⋯O hydrogen...

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Veröffentlicht in:Acta crystallographica. Section C, Crystal structure communications Crystal structure communications, 2001-07, Vol.57 (7), p.876-879
Hauptverfasser: Ishida, Hiroyuki, Rahman, Bilkish, Kashino, Setsuo
Format: Artikel
Sprache:eng
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Zusammenfassung:2‐Chloro‐4‐nitro­benzoic acid and 2‐chloro‐5‐nitro­benzoic acid form O—H⋯N hydrogen bonds with pyrazine to afford 2:1 complexes of 2C7H4ClNO4·C4H4N2, (I) and (II), respectively, that are located on inversion centers. The 2C7H4ClNO4·­C4H4N2 units in both complexes are connected by weak C—H⋯O hydrogen bonds; the units build a three‐dimensional hydrogen‐bond network in (I) and a ribbon structure in (II).
ISSN:0108-2701
1600-5759
DOI:10.1107/S0108270101007016