Structure and Reactivity of a High-Spin, Nonheme Iron(III)- Superoxo Complex Supported by Phosphinimide Ligands.
Structure and Reactivity of a High-Spin, Nonheme Iron(III)- Superoxo Complex Supported by Phosphinimide Ligands.
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磷酰亚胺配体支持的高自旋非血红素铁 (III)-超氧复合物的结构和反应性。
DOI:
10.1021/jacs.1c05276
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发表时间:
2021
影响因子:
15
通讯作者:
Rittle,Jonathan
中科院分区:
文献类型:
--
作者:
Winslow,Charles;Lee,HeuiBeom;Field,MackenzieJ;Teat,SimonJ;Rittle,Jonathan
Nonheme iron oxygenases utilize dioxygen to accomplish challenging chemical oxidations. A further understanding of the Fe–O2intermediates implicated in these processes is challenged by their highly transient nature. To that end, we have developed a ligand platform featuring phosphinimide donors intended to stabilize oxidized, high-spin iron complexes. O2exposure of single crystals of a three-coordinate Fe(II) complex of this framework allowed forin crystallotrapping of a terminally bound Fe–O2complex suitable for XRD characterization. Spectroscopic and computational studies of this species support a high-spin Fe(III) center antiferromagnetically coupled to a superoxide ligand, similar to that proposed for numerous nonheme iron oxygenases. In addition to the apparent stability of this synthetic Fe–O2complex, its ability to engage in a range of stoichiometric and catalytic oxidation processes demonstrates that this iron-phosphinimide system is primed for development in modeling oxidizing bioinorganic intermediates and green oxidation chemistry.
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影响因子:
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DOI:
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