Crystal structure of a tri­fluoro­methyl benzoato quadruple-bonded dimolybdenum complex

The study of quadruple bonds between transition metals, in particular those of dimolybdenum, has revealed much about the two-electron bond. The solid-state structure of the quadruple-bonded dimolybdenum(II) complex tetra­kis­[μ-4-(tri­fluoro­methyl)­benzoato-κ2O:O′]bis[(tetra­hydro­furan-κO)molybdenum(II)] 0.762-pentane 0.238-tetra­hydro­furan solvate, [Mo2(p-O2CC6H4CF3)4·2THF]·0.762C5H12·0.238C4H8O or [Mo2(C8H4F3O2)4(C4H8O)2]·0.762C5H12·0.238C4H8O is reported. The complex crystallizes within a triclinic cell and low symmetry (PUnlabelled Image) results from the inter­calated penta­ne/THF solvent mol­ecules. The paddlewheel structure at 100 K has inversion symmetry and comprises four bridging carboxyl­ate ligands encases the Mo2(II,II) core that is characterized by two axially coordinated THF mol­ecules and an Mo—Mo distance of 2.1098 (7) Å.