从O2和可见光中生成一个可分离的,单质 ((V) -oxo复合物
Katharine A Prokop1, David P Goldberg
1Department of Chemistry, The Johns Hopkins University, Baltimore, Maryland 21218, United States.
Journal of the American Chemical Society
|April 27, 2012
概括
研究人员报告了 (III) 复合物的直接转化为 (V) 氧复合物,使用氧和可见光. 这种复合物还作为氧化反应的光催化剂,可能通过自由基机制.
科学领域:
- 无机化学 无机化学
- 摄影化学的使用.
- 催化剂是一种催化剂.
背景情况:
- 复合物在催化中具有多功能.
- 可见光光催化剂提供了可持续的合成途径.
- 了解反应机制对于催化剂的开发至关重要.
研究的目的:
- 报告 (III) 复合物的直接转化为 (V) 氧复合物的情况.
- 为了研究 (III) 复合物的光催化活性.
- 阐明复合物的光生成和光催化机制.
主要方法:
- (III) 复合物的直接氧化,使用O (II) 和可见光.
- 三酸 (PPh(3) 的光催化氧化成三酸氧化物 (OPPh(3)).
- 机理学研究涉及光化学和激素路径调查.
主要成果:
- 在O2和可见光下,成功地将 (III) 复合物[TBP (8) Cz) Mn (III) (1) ]转化为 (V) 氧复合物[TBP (8) Cz) Mn (V) O (2) ].
- 综合体1证明了对PPh(3) 氧化具有高效的光催化活性.
- 机理学研究排除了单个氧气参与,这表明复合体2的光生成的自由基机制.
结论:
- 可见光驱动的O(2) 激活由复合体是可行的.
- (III) 复合物是氧化反应的强有力的光催化剂.
- ((V) -oxo物种的光生成可能通过光激活的自由基路径进行.
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