Synthesis and characterization of an iron(IV) ketimide complex.
Addition of 4 equiv of LiN═C(t)Bu(2) to FeCl(2) in Et(2)O/THF results in the formation of [Li(THF)](2)[Fe(N═C(t)Bu(2))(4)] (1). Oxidation of 1 with 0.5 equiv of I(2) in Et(2)O/DME yields [Li(DME)][Fe(N═C(t)Bu(2))(4)] (2) in moderate yield. Both 1 and 2 are high spin and exhibit tetrahedral geometries in the solid state. Oxidation of 1 with 1 equiv of I(2) in Et(2)O yields Fe(N═C(t)Bu(2))(4) (3) in good yield. Surprisingly, complex 3 exhibits a diamagnetic ground state and a nearly square planar geometry about the Fe center.
Lewis
Richard A
RA
Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, USA.
Wu
Guang
G
Hayton
Trevor W
TW
D007097:Imines / Q000737:chemistry*; D007501:Iron / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation; D009570:Nitriles / Q000737:chemistry*; D009942:Organometallic Compounds / Q000138:chemical synthesis* / Q000737:chemistry*; D010084:Oxidation-Reduction
D007097:Imines; D009570:Nitriles; D009942:Organometallic Compounds; C542835:ketimine; D007501:Iron