Skip to main content
. Author manuscript; available in PMC: 2022 Apr 11.
Published in final edited form as: Inorg Chem. 2021 Jun 10;60(12):8710–8721. doi: 10.1021/acs.inorgchem.1c00684

TABLE 5.

Comparison of substrate oxidation rates for FeIII–OH and MnIII–OH complexes

Complex Substrate T (˚C) k2 H/D KIE Ref
1-OH TEMPOH −40 0.33 1.4 a
2-OH TEMPOH −40 0.32 1.7 a
3-OH TEMPOH −40 0.37 2.7 a
[(TMC-py)Fe(OH)]2+ TEMPOH −40 7.1 6 37
(TMP)Fe(OH) TEMPOH 25 76 - 53
[(PyPz)Fe(OH2)(OH)4+ xanthene 20 2.2 × 103 20 54
[(Py5)Fe(OH)]2+ DHA 25 4.3 × 10−4 6.3 55
[(dpaq)Mn(OH)]+ TEMPOH 25 0.13 1.8 56
[(dpaq2Me)Mn(OH)]+ TEMPOH −35 3.9 2.7 50
[(dpaq5Cl)Mn(OH)]+ TEMPOH −35 2.8 - 51
[(dpaq5NO2)Mn(OH)]+ TEMPOH −35 7 - 51
[(SMe2N4(tren))-Mn(OH)]+ TEMPOH 25 2.1 × 103 3.1 52
a.

This work. Abbreviations used: TMC-py = 1-(pyridyl-2′-methyl)-4,8,11-trimethyl-1,4,8,11-tetrazacyclotetradecane, Py5 = (2,6-bis(bis(2-pyridyl)methoxymethane)pyridine, TMP = meso-tetramesitylporphyrinate; PyPz = quaternized tetra-2,3-pyridinoporphyrazine, dpaq = 2-(bis(pyridin-2-ylmethyl)amino)-N-(quinolin-8-yl)acetamidate anion.