An Ultra-Stable Oxoiron(IV) Complex and Its Blue Conjugate Base.

ABSTRACT: Treatment of [Fe^II(L)](OTf)₂ (4), (where L = 1,4,8-Me₃cyclam-11-CH₂C(O)NMe₂) with iodosylbenzene yielded the corresponding S = 1 oxoiron(IV) complex [Fe^IV(O(L)](OTf)₂ (5) in nearly quantitative yield. The remarkably high stability of 5 (t_1/2 ≈ 5 days at 25 °C) facilitated its characterization by X-ray crystallography and a raft of spectroscopic techniques. Treatment of 5 with strong base was found to generate a distinct, significantly less stable S = 1 oxoiron(IV) complex, 6 (t_1/2 ~ 1.5 hrs. at 0 °C), which could be converted back to 5 by addition of a strong acid; these observations indicate that 5<

SUBMITTER: England J 

PROVIDER: S-EPMC3956701 | biostudies-literature | 2014 Mar

REPOSITORIES: biostudies-literature