Reactions of the unsaturated triosmium cluster [(μ-H)Os3(CO)8(Ph2PCH2P(Ph)C6H4)] with HX (X=Cl, Br, F, CF3CO2,CH3CO2): X-ray structures of [(μ-H)Os3(CO)7(η1-Cl)(μ-Cl)2(μ-dppm)],[(μ-H)2Os3(CO)8(Ph2PCH2P(Ph)C6H4)]+[CF3O]− and the two isomers of [(μ-H)Os3(CO)8(μ-Cl)(μ-dppm)]

Bimetallic Osmium−Tin Clusters: Addition of Triphenyltinhydride to Unsaturated [Os3(CO)8{μ3-Ph2PCH2P(Ph)C6H4}(μ-H)] and Saturated [Os3(CO)10(μ-dppm)]

“…As a result of the highly reversible orthometallation of [Os 3 (CO) 10 (μ-dppm)] ( 1 ) (dppm = Ph 2 PCH 2 PPh 2 ) to give the unsaturated cluster [Os 3 (CO) 8 {μ 3 -Ph 2 PCH 2 P(Ph)C 6 H 4 }(μ-H)] ( 2 ) with an accessible coordination site, the latter has proven to be a pivotal precursor for the synthesis of a wide variety of interesting and potentially useful clusters. Thus, 2 reacts with CO, H 2 , diphenylacetylene, [Au(PPh 3 )][PF 6 ], [Sn{CH(SiMe 3 ) 2 } 2 ], phosphines, thiols, organic-heterothiols, dithiols, diazomethane, PhSeSePh, HX (X = Cl, Br, F), and benzothiophene 27 under mild conditions. We recently reported the synthesis of the osmium−silicon clusters [Os 3 (CO) 9 (μ-dppm)(SiR 3 )(μ-H)] and [Os 3 (CO) 7 {μ 3 -Ph 2 PCH 2 P(Ph)C 6 H 4 }(SiR 3 )(μ-H) 2 ] (SiR 3 = SiPh 3 , SiEt 3 , SiEtMe 2 ) from the reaction of 2 with R 3 SiH and described the dynamic behavior of the former .…”