Abstract
The crystals of C 8 H 9 N 3 O 2 .C 2 H 4 O 2 consist of a one-to-one ratio of salicylaldehyde semicarbazone and acetic acid. Each molecule of salicylaldehyde semicarbazone is joined to an acetic acid molecule by a double hydrogen bond. This arrangement is very similar to the typical carboxylic acid dimer. The crystal structure exhibits a three-dimensional network of hydrogen bonds involving all of the possible hydrogen-bond donors and acceptors in both molecules.
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