Potassium 1,2,4,5-benzenetetracarboxylate, C6H2(CO2K)4·4H2O; its formation, crystal structure, and hydrogen bonding

  • John Emsley
  • Robert J. Parker
  • Reiko Kuroda


From an aqueous mixture of 1,2,4,5-benzenetetracarboxylic acid, C6H2(CO2H)4, and KF we grew crystals first of KHF2 then of the title compound. An X-ray crystallographic determination of this compound shows a network of C6H2(CO 2 )4 units linked through hydrogen bonds to water molecules. This is the first reported structure of a benzenecarboxylate anion. Two carboxylate groups are coplanar with the benzene ring, whereas the other two are perpendicular to it.


Hydrogen Potassium 4H2O Crystal Structure Benzene 
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Copyright information

© Plenum Publishing Corporation 1986

Authors and Affiliations

  • John Emsley
    • 1
  • Robert J. Parker
    • 1
  • Reiko Kuroda
    • 2
  1. 1.Department of ChemistryKing's College StrandLondonEngland
  2. 2.CRC Biomolecular Structure UnitInstitute of Cancer ResearchSuttonEngland

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