Tris(η(5)-cyclo-penta-dien-yl)-tris-[η(6)-[9,10-dihydro-anthracene-9,10-endo-3',4'-(N-benz-yl)pyrrolidine]]triruthenium(II) tris-(hexa-fluoro-phosphate) acetone disolvate.

In the title compound, [Ru(3)(C(25)H(23)N)(C(5)H(5))(3)]·3PF(6)·2C(3)H(6)O], the cation is a triruthenium complex of a 9,10-dihydro-anthracene derivative. Three RuCp(+) (Cp is cyclo-penta-dien-yl) groups are bonded to the three aromatic rings of the ligand. Surprisingly, the pyramidalized N atom of the heterocycle (Σ C-N-C = 329.0°) points towards the anthracenyl group, so losing its coordinative ability. There is an inter-molecular C-H⋯π inter-action involving an acetone mol-ecule and the adjacent benzyl ring of the ligand. In the crystal, mol-ecules are linked via a number of C-H⋯O and C-H⋯F inter-actions and a C-H⋯π inter-action, leading to the formation of a three-dimensional supra-molecular structure. One of the Cp groups is disordered over two positions, with refined occupancies of 0.695†(14):0.305†(14). Two of the three hexa-fluoro-phospate anions are disordered, with refined occupancies of 0.630†(6):0.370†(6) and 0.771†(8):0.229†(8). One of the two solvent acetone mol-ecules is also disordered, with refined occupancies of 0.82†(2):0.18†(2).