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 Filter Wire Harness the two molecules, and the prop-1-yne groups adopt extended conformations.In each molecule, an Full TOB Set intramolecular O—H.O hydrogen bond involving 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].