Di-μ-hydroxido-bis­[tris­(4,4,4-trifluoro-1-phenyl­acetyl­acetonato-κ(2) O,O′)hafnium(IV)] dimethyl­formamide disolvate

The binuclear molecule of the title compound, [Hf(2)(C(10)H(6)F(3)O(2))(6)(OH)(2)]·2C(3)H(7)NO, lies across an inversion centre and contains a Hf(IV) atom which is eight-coordinated and surrounded by three chelating β-diketonato tris­(4,4,4-trifluoro-1-phenyl­acetyl­acetonate (tfba(−)) ligands and two bridging OH(−) groups in a distorted square-anti­prismatic geometry. The Hf—O bond lengths vary from 2.073 (2) to 2.244 (2) Å and the O—Hf—O bite angles vary from 73.49 (9) to 75.60 (9)°. Weak O—H⋯O hydrogen-bonding inter­actions are observed between the bridging hy­droxy groups and the dimethylformamide solvent mol­ecules. The unit cell contains solvent-accessible voids of 131 Å(3), but the residual electron density in the difference Fourier map suggests no solvent mol­ecule occupies this void.