Abstract
Density functional theory (DFT) calculations were performed for a series of significant terminal high-valent metal-oxo complexes, where the metals are Mn, Fe, Co, and Ni, to reveal their electronic property and reactivity patterns toward the inert C-H bond activation. We found that as the metal center changes from Mn to Ni, the bond strength of metal-oxo decreases while the oxyl character of the oxygen increases, which suggests an increase in the hydrogen-abstraction reactivity. This prediction was further strengthened by theoretical reactivity studies, that is, the reactivities of these four metal-oxo species toward inert C-H bond followed an order of MnO ≈ FeO ≪ CoO < NiO. At the orbital level, it was found that three different electron transfer mechanisms were active among these four species. Thus, this study would provide an explanation and intuitive clues for chemists to understand the nature of the high-valent late transition metal-oxo species.
Original language | English |
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Pages (from-to) | 1506-1512 |
Number of pages | 7 |
Journal | Bulletin of the Korean Chemical Society |
Volume | 42 |
Issue number | 11 |
DOIs | |
State | Published - Nov 2021 |
Bibliographical note
Funding Information:The authors acknowledge financial support from the National Research Foundation (NRF) of Korea (NRF‐2021R1A3B1076539 to Wonwoo Nam and NRF‐2021R1A2C1012851 to Kyung‐Bin Cho).
Publisher Copyright:
© 2021 Korean Chemical Society, Seoul & Wiley-VCH GmbH
Keywords
- DFT
- high-valent metal-oxo
- hydrogen atom abstraction
- reaction mechanism