International Union of Crystallography, Acta Crystallographica Section E: Crystallographic Communications, 10(71), p. 1151-1154, 2015
DOI: 10.1107/s2056989015015923
Full text: Download
In the title compound, C8H9BO4, the methoxycarbonyl group is rotated out of the plane of the benzene ring by 7.70 (6)°. In the crystal, molecules are linkedviapairs of O—H...O hydrogen bonds, involving the boronic acid OH groups, forming inversion dimers. The dimers are linkedviaO—H...O hydrogen bonds, involving a boronic acid OH group and the carbonyl O atom, forming undulating sheets parallel to (10-2). Within the sheets there are also C—H...O hydrogen bonds present, also involving the carbonyl O atom. The sheets are linkedviaC—H...π and offset face-to-face π-interactions between inversion-related molecules [inter-centroid distance = 3.7843 (16) Å, interplanar distance = 3.3427 (4) Å and offset = 1.744 Å], forming a three-dimensional structure.