Tetraethylammonium diiron oxyhexachloride is the chemical compound with the formula (N(C2H5)4)2Fe2OCl6.

It is the tetraethylammonium salt of [Fe2OCl6]2-.

Many related salts of [Fe2OCl6]2- are known.

The anion consists of a pair of tetrahedral Fe(III) centers that share a oxo bridging ligand.

[2] The salt can be prepared by treatment of tetraethylammonium tetrachloroferrate with sodium trimethylsiloxide.