An octahedral coordination complex of iron(VI).
The hexavalent state, considered to be the highest oxidation level accessible for iron, has previously been found only in the tetrahedral ferrate dianion, FeO4(2-). We report the photochemical synthesis of another Fe(VI) compound, an octahedrally coordinated dication bearing a terminal nitrido ligand. Mössbauer and x-ray absorption spectra, supported by density functional theory, are consistent with the octahedral structure having an FeN triple bond of 1.57 angstroms and a singlet d2(xy) ground electronic configuration. The compound is stable at 77 kelvin and yields a high-spin Fe(III) species upon warming.
Berry
John F
JF
Max-Planck-Institut für Bioanorganische Chemie, Stiftstrasse 34-36, D-45470 Mülheim an der Ruhr, Germany.
Bill
Eckhard
E
Bothe
Eberhard
E
George
Serena DeBeer
SD
Mienert
Bernd
B
Neese
Frank
F
Wieghardt
Karl
K
D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003080:Cold Temperature; D004563:Electrochemistry; D007501:Iron / Q000737:chemistry*; D007536:Isomerism; D008958:Models, Molecular; D015394:Molecular Structure; D009584:Nitrogen / Q000737:chemistry; D009942:Organometallic Compounds / Q000737:chemistry*; D010084:Oxidation-Reduction; D010777:Photochemistry; D010782:Photolysis; D013055:Spectrophotometry, Infrared; D015204:Spectroscopy, Mossbauer; D013057:Spectrum Analysis
D009942:Organometallic Compounds; D007501:Iron; D009584:Nitrogen