NHC Versus Pyridine: How “Teeth” Change the Redox Behavior of Iron(II) Complexes

Type
Article
Authors
Weiss, Daniel T.
Anneser, Markus R.
Haslinger, Stefan
Pöthig, Alexander
Cokoja, Mirza
Basset, Jean-Marie cc
Kühn, Fritz E.
KAUST Department
Chemical Science Program
KAUST Catalysis Center (KCC)
Date
2015-10-06
Online Publication Date
2015-10-06
Print Publication Date
2015-10-26
Permanent link to this record
http://hdl.handle.net/10754/622437

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Abstract
A series of octahedral iron(II) complexes with tetradentate NHC/pyridine hybrid ligands containing up to three pyridyl units was designed to study the influence of NHC and pyridine donors on the electronic structure of the metal center. Structural analysis of the iron complexes by NMR spectroscopy and single-crystal X-ray diffraction reveals different coordination modes of the ligand depending on the linkage of the different donor moieties. The oxidation potentials of all complexes correlate linearly with the number of NHC moieties coordinated to iron, as shown by cyclic voltammetry. The influence, although minor, of structural properties on the oxidation potential and (in one case) the influence of the oxidation state of the coordination geometry of the hybrid ligand are also demonstrated.
Citation
Weiss DT, Anneser MR, Haslinger S, Pöthig A, Cokoja M, et al. (2015) NHC Versus Pyridine: How “Teeth” Change the Redox Behavior of Iron(II) Complexes. Organometallics 34: 5155–5166. Available: http://dx.doi.org/10.1021/acs.organomet.5b00732.
Sponsors
D.T.W. and S.H. gratefully acknowledge support from the TUM Graduate School.
Publisher
American Chemical Society (ACS)
Journal
Organometallics
DOI
10.1021/acs.organomet.5b00732
Relations
Is Supplemented By:
  • [Dataset]
    Weiss, D. T., Anneser, M. R., Haslinger, S., Pöthig, A., Cokoja, M., Basset, J.-M., & Kühn, F. E. (2015). CCDC 1420288: Experimental Crystal Structure Determination [Data set]. Cambridge Crystallographic Data Centre. https://doi.org/10.5517/cc1jnxrv. DOI: 10.5517/cc1jnxrv HANDLE: 10754/624467
  • [Dataset]
    Weiss, D. T., Anneser, M. R., Haslinger, S., Pöthig, A., Cokoja, M., Basset, J.-M., & Kühn, F. E. (2015). CCDC 1420289: Experimental Crystal Structure Determination [Data set]. Cambridge Crystallographic Data Centre. https://doi.org/10.5517/cc1jnxsw. DOI: 10.5517/cc1jnxsw HANDLE: 10754/624468
  • [Dataset]
    Weiss, D. T., Anneser, M. R., Haslinger, S., Pöthig, A., Cokoja, M., Basset, J.-M., & Kühn, F. E. (2015). CCDC 1420290: Experimental Crystal Structure Determination [Data set]. Cambridge Crystallographic Data Centre. https://doi.org/10.5517/cc1jnxtx. DOI: 10.5517/cc1jnxtx HANDLE: 10754/624469
  • [Dataset]
    Weiss, D. T., Anneser, M. R., Haslinger, S., Pöthig, A., Cokoja, M., Basset, J.-M., & Kühn, F. E. (2015). CCDC 1420291: Experimental Crystal Structure Determination [Data set]. Cambridge Crystallographic Data Centre. https://doi.org/10.5517/cc1jnxvy. DOI: 10.5517/cc1jnxvy HANDLE: 10754/624470
  • [Dataset]
    Weiss, D. T., Anneser, M. R., Haslinger, S., Pöthig, A., Cokoja, M., Basset, J.-M., & Kühn, F. E. (2015). CCDC 1420292: Experimental Crystal Structure Determination [Data set]. Cambridge Crystallographic Data Centre. https://doi.org/10.5517/cc1jnxwz. DOI: 10.5517/cc1jnxwz HANDLE: 10754/624471
Collections
Articles; Chemical Science Program; KAUST Catalysis Center (KCC)