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- W4386305654 abstract "Activation of C-H bonds using an earth-abundant metal catalyst is one of the top challenges of chemistry, where high-valent Mn/Fe-oxo(hydroxo) biomimic species play an important role. There are several open questions related to the comparative oxidative abilities of these species, and a unifying concept that could accommodate various factors influencing reactivity is lacking. To shed light on these open questions, here, we have used a combination of density functional theory (DFT) (B3LYP-D3/def2-TZVP) and ab initio (CASSCF/NEVPT2) calculations to study a series of high-valent metal-oxo species [Mn+H3buea(O/OH)] (M = Mn and Fe, n = II to V; H3buea = tris[(N'-tert-butylureaylato)-N-ethylene)]aminato towards the activation of dihydroanthracene (DHA). The H-bonding network in the ligand architecture influences the ground state-excited state gap and brings several excited states of the same spin multiplicity closer in energy, which triggers reactivity via one of those excited states, reducing the kinetic barriers for the C-H bond activation and rationalizing several puzzling reactivity trends observed in various high-valent Mn/Fe-oxo(hydroxo) species." @default.
- W4386305654 created "2023-09-01" @default.
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- W4386305654 date "2023-08-31" @default.
- W4386305654 modified "2023-10-15" @default.
- W4386305654 title "Probing the Origins of Puzzling Reactivity in Fe/Mn–Oxo/Hydroxo Species toward C–H Bonds: A DFT and Ab Initio Perspective" @default.
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- W4386305654 doi "https://doi.org/10.1021/acs.inorgchem.3c01632" @default.
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