Crystal structures of three hydrogen-bonded 1:2 compounds of chloranilic acid with 2-pyridone, 3-hy-droxy-pyridine and 4-hyroxypyridine.

ABSTRACT: The crystal structures of the 1:2 compounds of chloranilic acid (systematic name: 2,5-di-chloro-3,6-dihy-droxy-1,4-benzo-quinone) with 2-pyridone, 3-hy-droxy-pyridine and 4-hyroxypyridine, namely, bis-(2-pyridone) chloranilic acid, 2C₅H₅NO·C₆H₂Cl₂O₄, (I), bis-(3-hy-droxy-pyridinium) chloranilate, 2C₅H₆NO⁺·C₆Cl₂O₄^2-, (II), and bis-(4-hy-droxy-pyridinium) chloranilate, 2C₅H₆NO⁺·C₆Cl₂O₄^2-, (III), have been determined at 120 K. In the crystal of (I), the base mol-ecule is in the lactam form and no acid-base inter-action involving H-atom transfer is observed. The acid mol-ecule

SUBMITTER: Gotoh K 

PROVIDER: S-EPMC5730315 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature