2-Hydroxy-4-(prop-2-ynyloxy)benzaldehyde

2-Hydroxy-4-(prop-2-ynyloxy)benzaldehyde

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The asymmetric unit of the title compound, C10H8O3, contains two independent molecules, both of which are almost planar (r.m.s deviations for all non-H atoms of 0.044 and 0.

053 Å).The dihedral angles between the benzene ring and the prop-1-yne group are 3.47 (1) and 3.07 (1)° in the two molecules, Ice Maker Solenoid and the prop-1-yne groups adopt extended conformations.

In each molecule, an intramolecular O—H.O hydrogen bond involving Goodies the OH and aldehyde substituents forms an S(6) ring.In the crystal, molecules are linked into cyclic centrosymmetric dimers via C—H.O hydrogen bonds, generating R22(14) ring motifs.

The crystal structure is further stabilized by aromatic π–π stacking interactions between the benzene rings [centroid–centroid distances = 3.813 (2) and 3.843 (2) Å].