Reports

Potassium Hydrogen Malonate: Remarkable Crystal and Molecular Structure

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Science  12 Jul 1968:
Vol. 161, Issue 3837, pp. 179-180
DOI: 10.1126/science.161.3837.179

Abstract

X-ray crystallographic investigations of potassium hydrogen malonate crystals reveal a very unusual structure in which malonic acid molecules and doubly ionized malonate ions exist in equal numbers. These two species a nected by strong hydrogen bonds in one direction and by potassium ions in the other directions. This seems to be the first observation of the simultaneous ence in a crystal of the two species dicarboxylic acid molecules and their charged ions.

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