Next Article Table of Contents

Communication

Bis(imino)pyridine Ligand Deprotonation Promoted by a Transient Iron Amide

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

Inorg. Chem., 2006, 45 (1), pp 2–4

DOI: 10.1021/ic051839o

Publication Date (Web): November 30, 2005

Corresponding author. E-mail: pc92@cornell.edu.

Abstract

Addition of 2 equiv of LiNMe₂ to the bis(imino)pyridine ferrous dichloride, (ⁱ^PrPDI)FeCl₂ (ⁱ^PrPDI = (2,6-ⁱPr₂−C₆H₃NCMe)₂C₅H₃N), resulted in deprotonation of the chelate methyl groups, yielding the bis(enamide)pyridine iron dimethylamine adduct, (ⁱ^PrPDEA)Fe(NHMe₂) (ⁱ^PrPDEA = (2,6-ⁱPr₂−C₆H₃NCCH₂)₂C₅H₃N). Performing a similar procedure with KN(SiMe₃)₂ in THF solution afforded the corresponding bis(THF) adduct, (ⁱ^PrPDEA)Fe(THF)₂. (ⁱ^PrPDEA)Fe(NHMe₂) has also been prepared by addition of the free amine to the iron dialkyl complex, (ⁱ^PrPDI)Fe(CH₂SiMe₃)₂, implicating formation of a transient iron amide that is sufficiently basic to deprotonate the bis(imino)pyridine methyl groups. Deprotonation of the amine ligand in (ⁱ^PrPDEA)Fe(NHMe₂) has been accomplished by addition of amide bases to afford the ferrous amide-ate complexes, [(ⁱ^PrPDEA)Fe(μ-NMe₂)M] (M = Li, K).

View: Full Text HTML | Hi-Res PDF

Tools

SciFinder Links

History

Published In Issue January 09, 2006
Received October 24, 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 Diazoalkane Chemistry: N−N Bond Hydrogenation and Intramolecular C−H ActivationJournal of the American Chemical Society
- Iron Diazoalkane Chemistry: N−N Bond Hydrogenation and Intramolecular C−H Activation
  Suzanne C. Bart, Amanda C. Bowman, Emil Lobkovsky, and Paul J. Chirik
  Journal of the American Chemical Society 2007 129 (23), pp 7212–7213
  Abstract: Treatment of the intermediate spin ferrous bis(dinitrogen) complex, (^ⁱ^PrPDI)Fe(N₂)₂ (^ⁱ^PrPDI = 2,6-(2,6-ⁱPr₂−C₆H₃NCMe₂)₂C₆H₃N), with 1 equiv of N₂CHSiMe₃ afforded the corresponding iron diazoalkane compound, (^ⁱ^PrPDI)Fe(N₂CHSiMe₃). Spectroscopic studies in ...
  Abstract | Full Text HTML | Hi-Res PDF

Communication

Bis(imino)pyridine Ligand Deprotonation Promoted by a Transient Iron Amide

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 Diazoalkane Chemistry: N−N Bond Hydrogenation and Intramolecular C−H Activation

Other ACS content by these authors:

JOURNALS

BOOKS

MAGAZINE

COMMUNITIES

DIRECTORIES & DATABASES