Stable, Cationic Alkyl−Olefin Complexes of Ruthenium(II) and Rhodium(III): Effects of Ligand Geometry upon Olefin Insertion/Alkyl Migration
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....
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Veröffentlicht in: | Organometallics 2000-11, Vol.19 (24), p.4995-5004 |
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Hauptverfasser: | , , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
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Zusammenfassung: | 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. |
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ISSN: | 0276-7333 1520-6041 |
DOI: | 10.1021/om000674i |