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