Crystal structure of (2-acetyl­ferrocen-1-yl)boronic acid

(2-Acetyl­ferrocen-1-yl)boronic acid, [Fe(C(5)H(5))(C(7)H(8)BO(3))] or 2-C(O)CH(3)-1-B(OH)(2)–Fc [Fc = Fe(η(5)-C(5)H(3))(η(5)-C(5)H(5))], crystallizes in the centrosymmetric space group P2(1)/n. The boronic acid functionality inter­acts via intra­molecular hydrogen bonds with the acetyl group and with the –B(OH)(2) functionality of an adjacent mol­ecule. The resulting centrosymmetric dimer exhibits an anti-positioning of the ferrocenyl moieties towards the central B(2)O(4) plane. Consequently, an (R(p),S(p))-, i.e. a meso configuration is present for this dimer. In the crystal, weak C—H⋯O hydrogen bonds consolidate the mol­ecular packing.