(A) Thermal ellipsoid drawing of [FeIV(O)(TMG3tren)]2+ (d36-1), showing 50% probability ellipsoids. Hydrogen atoms, counterions and solvent molecules have been omitted for clarity. (B) van der Waals space-filling model of d36-1, with view parallel to the Fe=O axis. Counterions and solvent molecules have been omitted for clarity. Atom color scheme: C, gray; H, white; N, blue, O, red; Fe, magenta.