Crystal structure of bis(acetylacetonato-κ²O,O′)(tetrahydrofuran-κO)(trifluoromethanesulfonato-κO)iron(III)

The mononuclear title complex, [Fe(CF₃O₃S)(C₅H₇O₂)₂(C₄H₈O)] or [Fe(acac)₂(OTf)(THF)] (acac = acetylacetonate; OTf = trifluoromethanesulfonate; THF = tetrahydrofuran), (I), consists of one six-coordinate Fe³⁺ atom in a slightly distorted octahedral environment [Fe - O bond-length range = 1.9517(11)-2.0781(11)Å]. The triflate ligand was found to be disordered over two sets of sites, with a site-occupancy ratio of 0.622(16):0.378(16). Weak intermolecular C - H⋯O and C - H⋯F hydrogen-bonding interactions generate a two-dimensional supramolecular structure lying parallel to (100). This is only the second crystal structure reported of a mononuclear bis(acetylacetonato)iron(III) complex.