The title compound, [Fe(2)Cl(4)O(C(7)H(12)N(2))(4)], contains vertex-sharing distorted tetrahedral [FeOCl(3)](-) and octahedral [FeOCl(Hpz(t)Bu)(4)](+) moieties (Hpz(t)Bu is 5-tert-butylpyrazole), linked by a bent oxo bridging ligand. The two Fe(III) centres are also bridged by intramolecular hydrogen bonds between the pyrazole N-H groups and the O(2-) and Cl(-) ligands.