通过O2激活的反应性,光生成的高旋转 (S = 2) 铁复合体
Jesse B Gordon1, Therese Albert2, Aniruddha Dey1
1Department of Chemistry, The Johns Hopkins University, 3400 N. Charles Street, Baltimore, Maryland 21218, United States.
Journal of the American Chemical Society
|December 16, 2021
概括
研究人员直接从二氧化物中产生了高旋铁氧复合物. 这种反应性物种是一种罕见的合成物种,可以氧化基,证明其作为化学反应中的活性氧化剂的潜力.
科学领域:
- 生物有机化学
- 有机金属化学
- 摄影化学
背景情况:
- 非血铁复合体在生物氧化反应中起着至关重要的作用.
- 了解高价值铁氧物种的反应性是模仿酶机制的关键.
- 合成模型对于阐明涉及二氧化物激活的反应途径至关重要.
研究的目的:
- 合成和描述一种由二氧化物生成的新型高价值铁氧复合物.
- 在光解过程中研究过氧桥分离复合物的O-O键裂解机制.
- 探索产生的铁氧物种作为氧化剂的反应性.
主要方法:
- 非血复合物的低温反应与二氧化物.
- 使用紫外线,共振拉曼和可变场Mössbauer光谱的表征.
- 过氧复合物的光解和随后的与的反应性研究.
主要成果:
- 从铁前体和O2中形成过氧桥分离复合物.
- 光解 O-O 键裂变产生高旋转的 S=2 Fe ((IV) =O 复合物 (4).
- 复合物4具有高反应性,包括溶剂C-H裂变和竞争性氧化.
结论:
- 通过光解直接从O2生成合成高旋转Fe ((IV) =O复合物.
- 这种复合物是一种罕见的,高度反应的物种,能够氧化基质.
- 这些发现提供了O2激活机制和高价值铁中间体的作用.
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