Potassium hydrogenacetylenedicarboxylate

Potassium hydrogenacetylenedicarboxylate is a potassium salt with chemical formula KC4HO4 or K+·HC4O4, often abbreviated as KHadc. It is often called potassium hydrogen acetylenedicarboxylate or monopotassium acetylenedicarboxylate.

The salt can be obtained from acetylenedicarboxylic acid and is a common laboratory starting material for the synthesis of other derivatives of that acid. In the crystalline form, the hydrogenacetylenedicarboxylate anions HC4O4s are joined into linear chains by uncommonly short hydrogen bonds. [1][2]

See also

References

  1. Ivan Leban and Ljubo Golić (1973), Crystal Structures of the Acid Salts of Some Dibasic Acids. Part VII. An X-Ray Study of Potassium Hydrogen Acetylenedicarboxylate: the α-Form. J. Chem. Soc., Perkin Trans. 2, , 703–705, doi:10.1039/P29730000703
  2. Keisuke Miyakubo (1994). Nuclear magnetic resonance studies of dynamicals structure of one-dimensional hyrogen-bonded system in the acid salts of some dicarboxylic acids. Ph.D. Thesis, Osaka University.
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