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4276371 
Journal Article 
Crystal structure of benzene-1,3,5-tri-carb-oxy-lic acid-4-pyridone (1/3) 
Staun, SL; Oliver, AG 
2015 
71 
Pt 11 
1283-1286 
English 
26594492 
Slow co-crystallization of a solution of benzene-1,3,5-tri-carb-oxy-lic acid with a large excess of 4-hy-droxy-pyridine produces an inter-penetrating, three-dimensional, hydrogen-bonded framework consisting of three 4-pyridone and one benzene-1,3,5-tri-carb-oxy-lic acid mol-ecules, C9H6O6·3C5H5NO. This structure represents an ortho-rhom-bic polymorph of the previously reported C-centered, monoclinic structure [Campos-Gaxiola et al. (2014 ▸). Acta Cryst. E70, o453-o454].