Characterization of a heterobimetallic nonheme Fe(III)-O-Cr(III) species formed by O2 activation.
We report the generation and spectroscopic characterization of a heterobimetallic [(TMC)Fe(III)-O-Cr(III)(OTf)4] species (1) by bubbling O2 into a mixture of Fe(TMC)(OTf)2 and Cr(OTf)2 in NCCH3. Complex 1 also formed quantitatively by adding Cr(OTf)2 to [Fe(IV)(O)(TMC)(NCCH3)](2+). The proposed O2 activation mechanism involves the trapping of a Cr-O2 adduct by Fe(TMC)(OTf)2.
Department of Chemistry and Center for Metals in Biocatalysis, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, USA. larryque@umn.edu.
Ang
A
Zhou
Scott T
ST
Kleespies
Katherine M
KM
Van Heuvelen
Lawrence
L
Que
D002857:Chromium / Q000737:chemistry*; D005290:Ferric Compounds / Q000737:chemistry*; D047029:Lactams, Macrocyclic / Q000737:chemistry; D008745:Methylation; D010100:Oxygen / Q000737:chemistry*
D005290:Ferric Compounds; D047029:Lactams, Macrocyclic; D002857:Chromium; D010100:Oxygen