Photodimerization of the anthracene ruthenium complexes [(C5Me4R)Ru(η6-C14H10)]+ (R = Me, CH2OMe)

The dimerization of the anthracene ruthenium complexes [(C5Me4R)Ru(eta(6)-C14H10)](+) (R = Me, CH2OMe) under visible-light irradiation gives dications [(mu-eta(6):eta(6)-C28H20)Ru-2(C5Me4R)(2)](2+) with the most distant position of the Ru(C5Me4R) fragments; the structure of [(mu-eta(6):eta(6)-C28H20)Ru-2(C5Me4CH2OMe)(2)](PF6)(2) was established by X-ray diffraction.