5-Formyl-2-furanboronic acid at 100 K

2003

The furan ring in the title compound, C5H5BO4, is planar and each of the formyl and boronic groups makes a dihedral angle of ca 3° with this ring. The geometry of the furan ring is somewhat different to that found for substituted and unsubstituted furan structures. The mol­ecules are connected to each other in the bc plane by C—H⋯O and O—H⋯O hydrogen bonds.