Crystal structure of [{FeCl3}2(μ-PCHP)2] [PCHP = 1,3-bis­(2-di­phenyl­phosphanyleth­yl)-3H-imidazol-1-ium] with an unknown solvent

摘要

The crystal structure of the title compound, bis­{μ-1,3-bis­[2-(di­phenyl­phosphan­yl)eth­yl]-1H-imidazole-κ2P:P′}bis­[tri­chlorido­iron(III)], [Fe2Cl6(C31H31N2P2)2] or [{FeCl3}2(μ-PCHP)2] (PCHP = C31H31N2P2), consists of dinuclear complexes that are located about centres of inversion. The FeIII cation is in a distorted trigonal–bipyramidal coordination with three chloride ligands located in the trigonal plane and two P atoms of symmetry-related PCHP 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 (overline{1}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).