Bis(3,5-dimethoxyphenyl)phosphinic acid

In the crystal structure of the title compound, C16H19O6P, intermolecular O—H...O interactions link the molecules into chains parallel to the b axis. These chains are linked by C—H...π and π–π interactions [centroid–centroid distance = 3.7307 (29) Å] into a three-dimensional network. The dihedral angle between the benzene rings is 73.5 (1)°. The C and O atoms of all four methoxy groups lie very close to the mean planes of their attached rings; the C atoms are 0.055 (2)–0.1038 (1) Å out of the mean plane of the attached rings.

Abstract licence: CC BY

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