Acta Cryst. (2004). E60, o2356-o2358  [ doi:10.1107/S1600536804029241 ]

1-Ethyl-4-hydroxyquinolin-2(1H)-one

V. N. Baumer, O. V. Shishkin, I. V. Ukrainets, L. V. Sidorenko and S. A. E. Kayal

Abstract: X-ray diffraction study of the title compound, C₁₁H₁₁NO₂, (I), has shown that the molecular geometry is similar to that of 1-ethyl-4-hydroxy-2-oxo-1,2-dihydroquinoline-3-carboxylic acid, (II) [Shishkina, Shishkin, Ukrainets, Dakkah & Sidorenko (2002). Acta Cryst. E58, o254-o256]. Observed elongations of the bonds around the N atom are caused by steric hindrance between the ethyl H atoms and the planar quinolone fragment. Exocyclic angles in the 4-position are also distorted, but, in contrast to (II), this distortion is caused by the formation of zigzag hydrogen-bonded chains along the [010] direction.

Online 20 November 2004

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