A new precursor for organo-osmium complexes

The use of potassium osmate, K2[OsO2(OH)4], as a precursor for some cyclopentadienyl-osmium complexes is described. The X-ray structures of OsBr(PPh3)2Cp, OsCl(dppe)Cp and OsX(dppe)Cp∗ (X = Cl, Br) are reported.

Potassium osmate, K2[OsO2(OH)4] is a convenient non-volatile replacement for OsO4 as a precursor for OsCl2(PPh3)3 and OsX(PP)Cp′ (X = Cl, Br; PP = (PPh3)2, dppe; Cp′ = Cp, Cp∗). The X-ray crystal structures of OsBr(PPh3)2Cp, OsCl(dppe)Cp and OsX(dppe)Cp∗ (X = Cl, Br) are reported.Figure optionsDownload as PowerPoint slide