Crystal structure of 4-(methoxycarbonyl)phenylboronic acid

Abstract

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 linked via pairs of O—H⋯O hydrogen bonds, involving the boronic acid OH groups, forming inversion dimers. The dimers are linked via O—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 linked via C—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.