Studies of Orbital Principle for Methane Activation Using Computational Quantum Chemistry
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- Kazunari Yoshizawa
- Institute for Materials Chemistry and Engineering, Kyushu University
Bibliographic Information
- Other Title
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- 計算量子化学によるメタン活性化の軌道原理の研究
- Award Accounts 計算量子化学によるメタン活性化の軌道原理の研究
- Award Accounts ケイサン リョウシ カガク ニ ヨル メタン カッセイカ ノ キドウ ゲンリ ノ ケンキュウ
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Abstract
Quantum chemical studies on methane C–H bond activation and hydroxylation by methane monooxygenase (iron and copper enzyme species), related metal-oxo species such as FeO+, metal-exchanged zeolites, and metal-oxide surfaces are reviewed. The tetrahedral Td structure of methane should be deformed into a C3v or D2d structure at coordinatively unsaturated metal-oxo species. Mechanistic aspects about methane hydroxylation by the bare transition-metal oxide ions such as FeO+, NiO+, and CuO+ are analyzed in detail by using density functional theory calculations. An important feature in the reaction is the spin crossover between the high-spin and low-spin potential energy surfaces in particular in the C–H activation process, the energy barrier of which is significantly decreased by the spin inversion. These mechanistic insights are reasonably extended to Fe, Co, Ni, and Cuexchanged zeolites and IrO2 and β-PtO2 (110) surfaces.
Journal
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- Bulletin of Japan Society of Coordination Chemistry
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Bulletin of Japan Society of Coordination Chemistry 75 (0), 57-65, 2020-05-31
Japan Society of Coordination Chemistry