Crystal structure of [{FeCl(3)}(2)(μ-PC(H)P)(2)] [PC(H)P = 1,3-bis­(2-di­phenyl­phosphanyleth­yl)-3H-imidazol-1-ium] with an unknown solvent

The crystal structure of the title compound, bis­{μ-1,3-bis­[2-(di­phenyl­phosphan­yl)eth­yl]-1H-imidazole-κ(2) P:P′}bis­[tri­chlorido­iron(III)], [Fe(2)Cl(6)(C(31)H(31)N(2)P(2))(2)] or [{FeCl(3)}(2)(μ-PC(H)P)(2)] (PC(H)P = C(31)H(31)N(2)P(2)), consists of dinuclear complexes that are located about centres of inversion. The Fe(III) cation is in a distorted trigonal–bipyramidal coordination with three chloride ligands located in the trigonal plane and two P atoms of symmetry-related PC(H)P ligands occupying the axial positions. Within the centrosymmetric complex, a pair of intra­molecular C—H⋯Cl hydrogen bonds between aromatic CH groups and chloride ligands are found. Individual complexes are linked into layers parallel to ([Image: see text]01) by inter­molecular C—H⋯Cl hydrogen bonds. No pronounced inter­molecular inter­actions occur between these layers. This arrangement leaves space for disordered solvent mol­ecules. Electron density associated with these additional solvent mol­ecules was removed with the SQUEEZE procedure in PLATON [Spek (2015 ▸). Acta Cryst. C71, 9–18]. The given chemical formula and other crystal data do not take into account the unknown solvent mol­ecule(s).