Reactions of [HOs3(CO)10(µ-L)] (L = saccharinate, thiosaccharinate) with Ph3SnH and Ph3GeH

摘要: Abstract Reactions of triosmium clusters bearing a bridging saccharinate (sac) or thiosaccharinate (tsac) ligand with Ph3EH (E = Sn, Ge) are examined. The cluster [HOs3(CO)10(µ-N,O-sac)] reacts at 110°C to yield [H2Os3(CO)9(EPh3)(µ-N,O-sac)] (1a, E = Sn; 1b, E = Ge) through oxidative-addition E‒H bond the parent cluster. Similar reaction between [HOs3(CO)10(µ-N,S-tsac)] and 98°C affords [H2Os3(CO)9(EPh3)(µ-N,S-tsac)] (2a, 2b, [H2Os3(CO)8(EPh3)(µ-N,C-C6H4CNSO2)(µ3-S)] (3a, 3b, E = Ge), latter being isolated as major product. Control experiments show that competitive pathways involved in this reaction, products formed via separate pathways. Another product namely [Os3(CO)9(µ3-N,C-C6H4CHNSO2)(µ3-S)] (4) was also from Ph3GeH which does not contain any germanium ligand, is directly tsac-substituted confirmed by independent control experiments. molecular structures different types these reactions have been single crystal X-ray diffraction analyses.