Next Article Table of Contents

Communication

Bis(imino)pyridine Iron(II) Alkyl Cations for Olefin Polymerization

Supporting Info

Marco W. Bouwkamp, Emil Lobkovsky, and Paul J. Chirik*

Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853

J. Am. Chem. Soc., 2005, 127 (27), pp 9660–9661

DOI: 10.1021/ja0524447

Publication Date (Web): June 16, 2005

In papers with more than one author, the asterisk indicates the name of the author to whom inquiries about the paper should be addressed.

, pc92@cornell.edu

Abstract

Treatment of the five-coordinate ferrous dialkyl complex, (ⁱPrPDI)Fe(CH₂SiMe₃)₂ (ⁱPrPDI = ((2,6-CHMe₂)₂C₆H₃NCMe)₂C₅H₃N), with [PhMe₂NH][BPh₄] in the presence of diethyl ether or tetrahydrofuran furnished the corresponding alkyl cations, where the donor ligand is coordinated in the basal plane of a distorted square pyramidal iron(II) alkyl cation. Performing the same reaction with the neutral Lewis acid, B(C₆F₅)₃, induced methide abstraction from a silicon atom followed by rearrangement to afford the base free ferrous alkyl cation, [(ⁱPrPDI)Fe(CH₂SiMe₂CH₂SiMe₃)][MeB(C₆F₅)₃]. This complex is active for the polymerization of ethylene and yields polymers that are of higher molecular weight and narrower polydispersity than traditional methylalumoxane-activated catalysts.

View: Full Text HTML | Hi-Res PDF

Tools

SciFinder Links

History

Published In Issue July 13, 2005
Received April 14, 2005

Recommend & Share

Related Content

Electronic Structure of Bis(imino)pyridine Iron Dichloride, Monochloride, and Neutral Ligand Complexes: A Combined Structural, Spectroscopic, and Computational Study Electronic Structure of Bis(imino)pyridine Iron Dichloride, Monochloride, and Neutral Ligand Complexes: A Combined Structural, Spectroscopic, and Computational StudyJournal of the American Chemical Society
- Electronic Structure of Bis(imino)pyridine Iron Dichloride, Monochloride, and Neutral Ligand Complexes: A Combined Structural, Spectroscopic, and Computational Study Electronic Structure of Bis(imino)pyridine Iron Dichloride, Monochloride, and Neutral Ligand Complexes: A Combined Structural, Spectroscopic, and Computational Study
  Suzanne C. Bart, Krzysztof Chłopek, Eckhard Bill, Marco W. Bouwkamp, Emil Lobkovsky, Frank Neese, Karl Wieghardt, and Paul J. Chirik
  Journal of the American Chemical Society 2006 128 (42), pp 13901–13912
  Abstract: The electronic structure of a family of bis(imino)pyridine iron dihalide, monohalide, and neutral ligand compounds has been investigated by spectroscopic and computational methods. The metrical parameters combined with Mössbauer spectroscopic and magnetic ...
  Abstract | Full Text HTML | Hi-Res PDF
Preparation and Molecular and Electronic Structures of Iron(0) Dinitrogen and Silane Complexes and Their Application to Catalytic Hydrogenation and HydrosilationJournal of the American Chemical Society
- Preparation and Molecular and Electronic Structures of Iron(0) Dinitrogen and Silane Complexes and Their Application to Catalytic Hydrogenation and Hydrosilation
  Suzanne C. Bart, Emil Lobkovsky, and Paul J. Chirik
  Journal of the American Chemical Society 2004 126 (42), pp 13794–13807
  Abstract: Reduction of the five-coordinate iron(II) dihalide complexes (ⁱ^PrPDI)FeX₂ (ⁱ^PrPDI = ((2,6-CHMe₂)₂C₆H₃NCMe)₂C₅H₃N; X = Cl, Br) with sodium amalgam under 1 atm of dinitrogen afforded the square pyramidal, high spin iron(0) bis(dinitrogen) complex (ⁱ^PrPDI)Fe(...
  Abstract | Full Text HTML | Hi-Res PDF
Iron-Catalyzed [2π + 2π] Cycloaddition of α,ω-Dienes: The Importance of Redox-Active Supporting Ligands Iron-Catalyzed [2π + 2π] Cycloaddition of α,ω-Dienes: The Importance of Redox-Active Supporting LigandsJournal of the American Chemical Society
- Iron-Catalyzed [2π + 2π] Cycloaddition of α,ω-Dienes: The Importance of Redox-Active Supporting Ligands Iron-Catalyzed [2π + 2π] Cycloaddition of α,ω-Dienes: The Importance of Redox-Active Supporting Ligands
  Marco W. Bouwkamp, Amanda C. Bowman, Emil Lobkovsky, and Paul J. Chirik
  Journal of the American Chemical Society 2006 128 (41), pp 13340–13341
  Abstract: The bis(imino)pyridine iron bis(dinitrogen) complex, (ⁱPrPDI)Fe(N₂)₂ (ⁱPrPDI = 2,6-(2,6-ⁱPr₂C₆H₃NCR)₂C₅H₃N), serves as an efficient precursor for the catalytic [2π + 2π] cycloaddition of α,ω-dienes to yield the corresponding bicycles. For amine substrates,...
  Abstract | Full Text HTML | Hi-Res PDF

Communication

Bis(imino)pyridine Iron(II) Alkyl Cations for Olefin Polymerization

Abstract

Tools

SciFinder Links

History

Recommend & Share

Related Content

Preparation and Molecular and Electronic Structures of Iron(0) Dinitrogen and Silane Complexes and Their Application to Catalytic Hydrogenation and Hydrosilation

Iron-Catalyzed [2π + 2π] Cycloaddition of α,ω-Dienes: The Importance of Redox-Active Supporting Ligands Iron-Catalyzed [2π + 2π] Cycloaddition of α,ω-Dienes: The Importance of Redox-Active Supporting Ligands

Other ACS content by these authors:

JOURNALS

BOOKS

MAGAZINE

COMMUNITIES

DIRECTORIES & DATABASES