1,1,1,5,5,5-Hexafluoro-2,4-dimethoxypentane-2,4-diol

Abstract

The title compound, C7H10F6O4, was isolated as an unexpected product from a reaction of tantalum(V) methoxide with hexa­fluoro­acetyl­acetone in a methanol solution. The asymmetric unit consists of one half-mol­ecule with the middle C atom lying on a twofold axis. The crystal structure is stabilized by O—H⋯O and an array of C—H⋯F hydrogen-bonding inter­actions. These inter­actions link the mol­ecules into a stable supra­molecular three-dimensional network. The mol­ecules pack in a ribbon-like form in the ac plane as a result of these inter­actions.

Crystal structure of tetraethylammonium hexachloridotantalate(V), C8H20Cl6NTa

“…The cis Cl-Ta-Cl angles vary between and 89.76(1) and 90.56°c aused by the symmetry! All the bond distances and angles are similar to other relevant tantalum(V) structures [15,16]. …”