Degradation and modification of metallaboranes. Part 4: Synthesis and characterization of a series of hybrid bimetallaborane clusters of the type [2,2,2-(PPh3)2(CO)-nido-2-OsB4H7-3-(BH2PPh2)CxHyPPh2RuCl2(p-cym)]

The preparation and characterization of a series of hybrid bimetallaborane clusters is described. The species are based on a metallapentaborane cluster with a pendent BH2 moiety to which bidentate phosphines are attached. The moiety [RuCl2(p-cym)] is coordinated to the free end of the phosphines.