The cluster dication [(η6-C6H6)2(η6-C6Me6)4Ru8(μ2-H)2(μ3-O)2(μ2-Cl)2]2+: a chloro-bridged framework containing two metal tetrahedra

The title complex was obtained by reacting [(η6-C6H6)(η6-C6Me6)2Ru3(μ2-H)3(μ3-O)]+ with RuCl3·nH2O in aqueous solution; it crystallises as the tetrafluoroborate salt. The cationic cluster is formed of two tetrahedral Ru4 substructures which are held together by two chloro bridges.