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Top: Fe K-edge and enlarged pre-edge (inset) showing the increased pre-edge intensity of 2 (green) relative to 1 (blue) upon reaction with PhIO in acetonitrile. XAS data of [FeIV=O(TMC)(CH3CN)]2+ (black) are included for reference. Bottom: Fourier transform and EXAFS, data (—) and fit (----), of 2 showing the strong first shell intensity contribution resulting from a short (1.64 Å) Fe=O bond.
