Crystal structure of 2-hy­droxy-3-(prop-2-yn-1-yl)naphthalene-1,4-dione

The naphtho­quinone unit of the title compound, C(13)H(8)O(3), is essentially planar, with an r.m.s. deviation of 0.013 Å for the non-H atoms. The essentially linear propargyl group is tilted by ca 113° relative to the naphtho­quinone plane. In the crystal, mol­ecules are linked via a pair of O—H⋯O hydrogen bonds, forming an inversion dimer. The dimers are further linked via pairs of C—H⋯O hydrogen bonds into a tape structure along [20[Image: see text]]. No π–π stacking is observed in the present case as it could be expected for naphtho­quinone derivatives.