title: (2-Meth-oxy-1,3-phenyl-ene)diboronic acid.
abstract: The mol-ecular structure of the title compound, 2-CH(3)O-C(6)H(3)-1,3-[B(OH)(2)](2) or C(7)H(10)B(2)O(5), features two intra-molecular O-H⋯O hydrogen bonds of different strengths. One of the boronic acid groups is almost coplanar with the aromatic ring, whereas the second is significantly twisted. Mol-ecules are linked by inter-molecular O-H⋯O hydrogen bonds, generating infinite chains cross-linked to form a two-dimensional sheet structure aligned parallel to the (01) plane.
authors.affiliation: Warsaw University of Technology, Faculty of Chemistry, Noakowskiego 3, 00-664 Warsaw, Poland.
authors.forename: Marek
authors.initials: M
authors.lastname: Dąbrowski
authors.forename: Sergiusz
authors.initials: S
authors.lastname: Luliński
authors.forename: Janusz
authors.initials: J
authors.lastname: Serwatowski