Bridging versus chelating diphosphine in clusters: Isomers of Os3(CO)10(diphosphine)
作者:Antony J. Deeming、Susan Donovan-Mtunzi、Shariff E. Kabir
DOI:10.1016/0022-328x(84)80667-1
日期:1984.11
Isomers of Os3(CO)10(diphosphine) (diphosphine = Ph2P(CH2)nPPh2; n = 2 (dppe), n = 3 (dppp), and n = 4 (dppb)) have been prepared in which the diphosphine is chelating (1,1-isomer) or bridging (1,2-isomer), respectively, by displacing butadiene or acetonitrile from the complexes Os3(CO)10(cis- or trans-C4H6) or Os3(CO)10(MeCN)2. Ph2PCH2PPh2 (dppm) gives only the known bridging (1,2-isomer) whichever
Protonation and hydrogenation of triosmium clusters containing the bridging diphosphine ligands Ph2P(CH2nPPh2 (n 1 to 4)
作者:Antony J. Deeming、Shariff E. Kabir
DOI:10.1016/0022-328x(88)80029-9
日期:1988.2
Members of the series of bridgingdiphosphineclusters [Os3(CO)10(diphos)] where diphos Ph2P(CH2nPPh2 [dppm (n = 1), dppe (n = 2), dppp (n = 3), or dppb (n = 4)] show interesting differences in their reactivity towards H+ and H2. Protonation leads to [Os3(μ-H)(CO)10(diphos)]+ with the hydrides bridging the same osmium atoms as the diphos ligand when diphos is dppe, dppp, or dppb, whereas the hydride