期刊
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
卷 2022, 期 27, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.202200247
关键词
Bonding theory; Computational chemistry; Oxidation states; Population analysis; Transition metals
资金
- Center for Information Technology of the University of Groningen
- Netherlands Organisation for Scientific Research (NWO START-UP grant)
- Dutch Ministry of Education, Culture, and Science (OCW)
This paper presents a computational analysis of the challenging oxidation state assignment of the formal Cu(III) complex [Cu(CF3)(4)](1-). A quasi-d(10) perspective of the metal center is proposed, and the implications for understanding reactions with oxidation state changes are discussed.
The formal Cu(III) complex [Cu(CF3)(4)](1-) has often served as a paradigmatic example of challenging oxidation state assignment - with many reports proposing conflicting descriptions. Here we report a computational analysis of this compound, employing Energy Decomposition Analysis and Intrinsic Bond Orbital Analysis. We present a quasi-d(10) perspective of the metal centre, resulting from ambiguities in d-electron counting. The implications for describing reactions which undergo oxidation state changes, such as the formal reductive elimination from the analogous [Cu(CF3)(3)(CH2Ph)](1-) complex (Paeth et al. J. Am. Chem. Soc. 2019, 141, 3153), are probed. Electron flow analysis finds that the changes in electronic structure may be understood as a quasi-d(10) to d(10) transition at the metal centre, rendering this process essentially redox neutral. This is reminiscent of a previously studied formal Ni(IV) complex (Steen et al. Angew. Chem. Int. Ed. 2019, 58, 13133-13139), and indicates that our description of electronic structure has implications for the understanding of elementary organometallic reaction steps.
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