2-Phenylquinoline-4-carboxylic Acid

In 2-phenylquinoline-4-carboxylic acid, C₁₆H₁₁NO₂, hydrogen bonding occurs only between a carboxyl O atom donor and the ring N atom, which acts as an acceptor. The carboxyl H atom is ordered in this structure. The dihedral angle between the carboxyl group plane and the best-fit mean quinoline plane is 53.6 (1)°. All bond distances and angles within the quinoline core, the carboxyl group and the phenyl group fall within the normal ranges. The structure is described in space group P2₁2₁2₁.

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