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Pentamethylcyclopentadienyl Metalloradical Iron Complexes Containing Redox Noninnocent α-Diimine-Type Ligands: Synthesis, Molecular, and Electronic Structures

Journal Article · · Organometallics
 [1];  [2];  [2];  [2];  [2]
  1. Princeton Univ., NJ (United States); Korea Advanced Inst. of Science and Technology (KAIST), Daejeon (Korea, Republic of); Princeton University
  2. Princeton Univ., NJ (United States)
+ Show Author Affiliations
The synthesis and characterization of pentamethylcyclopentadienyl iron complexes bearing the redox non-innocent α-diimine (N,N'-dimesitylbutane-2,3-diimine, MesDI) and α-iminopyridine (N-mesityl(pyridin-2-yl)ethanimine MesPI) ligands were explored. One-pot reduction and complexation of the cyclopentadienyl ring was accomplished by treatment of (κ2-N,N')FeCl2 (N,N'= MesDI or MesPI) pre-cursors with [C5Me5]Li. The resulting iron compounds were characterized by paramagnetic 1H NMR spectroscopy, magnetic susceptibility measurements, zero-field 57Fe Mössbauer spectroscopy, low-temperature EPR spectroscopy, and cyclic voltammetry. The combined spectroscopic, structural and DFT computational data supported low-spin iron(III) compounds (SFe = ½) with π-acidic, formally doubly-reduced chelating ligands.
Research Organization:
Princeton Univ., NJ (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division (CSGB)
Grant/Contract Number:
SC0006498
OSTI ID:
1973128
Journal Information:
Organometallics, Journal Name: Organometallics Journal Issue: 6 Vol. 42; ISSN 0276-7333
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY