314733-87-4Relevant academic research and scientific papers
Stable, cationic alkyl-olefin complexes of ruthenium(II) and rhodium(III): effects of ligand geometry upon olefin insertion/alkyl migration
Dias,Brookhart,White
, p. 4995 - 5004 (2008/10/08)
The syntheses of ruthenium(II) and rhodium(III) model complexes of the putative active species in the iron(II)/MMAO polymerization system are reported. The cationic ruthenium methyl ethylene complex 3 is a stable, isolable compound, which does not produce polyethylene under a variety of conditions. Likewise, the analogous rhodium complex 12 shows no appreciable polymerization activity, despite its similarity to existing rhodium complexes which are active catalysts for olefin polymerization. X-ray crystal structures of the cationic ruthenium bis(ethylene) complex 7 and the five-coordinate rhodium bis(triflate) methyl complex 9 are also presented.
