1,1,1-Tris(di-methyl-amino)-2-[tris-(di-methyl-amino)-phospho-ranyl-idene]diphosphinium tetra-phenyl-borate tetra-hydro-furan monosolvate.

In the tetra­hydro­furan solvate of the title salt, C12H36N6P3+·C24H20B−·C4H8O, the cation features short P—P bond lengths [2.1111 (11) and 2.1364 (10) A] and a distinctly bent P—P—P angle [104.67 (4)°] that confirm that the mol­ecule is not allene-like. In the crystal, the solvent mol­ecule is linked to the cation via a weak C—H⋯O hydrogen bond.