Tris(1,10-phenanthroline)iron(II) μ-oxido-bis­[trichloridoferrate(III)]

In the title salt, [Fe(C(12)H(8)N(2))(3)][Fe(2)Cl(6)O], the ionic components are linked into a two-dimensional supra­molecular layer by two pairs of C—H⋯Cl hydrogen bonds and π–π stacking inter­actions [centroid–centroid distances = 3.655 (4) and 3.498 (3) Å]. The salt is characterized as a mixed-valent Fe(II)–Fe(III) compound, in which an Fe(II) atom is coordinated by three phen ligands, forming a six-coordinated cationic entity and the anionic part is formed by two Fe(III) atoms in tetra­hedral coordination environments constructed by three chloride ions and one bridging oxide ligand. Intra­molecular C—H⋯N hydrogen bonds are observed.