α-Formylphenylacetonitrile in the Solid State at 220K

The title compound, 3-hydroxy-2-phenylpropenonitrile (α-hydroxymethylene-α-phenylacetonitrile), C₉H₇NO, exists in the solid state as the Z–enol tautomer, forming one-dimensional chains via hydrogen bonding between the enol OH group and the nitrile N atom.

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