439675-32-8Relevant academic research and scientific papers
Tris(N-pyrrolyl)phosphine complexes of osmium(II) and osmium(0)
Rickard, Clifton E.F.,Roper, Warren R.,Woodgate, Scott D.,Wright, L. James
, p. 168 - 173 (2007/10/03)
Reaction between OsHC1(CO)(PPh3)3 and the powerful π-accepting ligand tris(N-pyrrolyl)phosphine, P(NC4H4)3, results in replacement of the PPh3 ligand trans to hydride giving decarboxylation of Os(p-tolyl)(η2-O2CH) (CO)(PPh3)2 (2) in the presence of P(NC4H4)3. Complex 3, despite having cis-hydride and p-tolyl ligands, is resistant to reductive elimination of toluene. Osmium(0) complexes containing P(NC4 H4)3 are conveniently prepared by replacement of one PPh3 ligand from Os(CO)(CE)(PPh3)3 (E = O, S) to give Os(CO)(CE)[P(NC4H4)3] (PPh3)2 (4, E = O; 5, E = S). Structure determination of 4 confirms a trigonal bipyramidal geometry with the PPh3 ligands in the axial positions and the π-accepting P(NC4H4)3 ligand in the expected equatorial site.
