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首页> 外文期刊>Chemical Reviews >Visible light photoredox catalysis with transition metal complexes: Applications in organic synthesis
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Visible light photoredox catalysis with transition metal complexes: Applications in organic synthesis

机译:过渡金属配合物的可见光光氧化还原催化:在有机合成中的应用

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The chemical review highlights the early work on the use of transition metal complexes as photoredox catalysts to promote reactions of organic compounds. Studies on the use of transition metal complexes as visible light photocatalysts for organic synthesis have significantly benefited from advances in the related fields of organic and semiconductor photocatalysis. It is better to consider the photochemistry of the prototypical photoredox catalyst Ru(bpy)~(2+)3 before discussing organic transformations enabled by photoredox catalysis. An electron in one of the photocatalyst's metal-centered t_(2g) orbitals is excited to a ligand-centered π* orbital on absorption of a photon in the visible region. This transition is termed a metal to ligand charge transfer (MLCT) and results in a species in which the metal has been effectively oxidized to a Ru(III) oxidation state and the ligand framework has undergone a single-electron reduction.
机译:化学综述着重介绍了使用过渡金属络合物作为光氧化还原催化剂来促进有机化合物反应的早期工作。关于过渡金属配合物作为可见光光催化剂用于有机合成的研究已大大受益于有机和半导体光催化相关领域的进展。在讨论由光氧化还原催化实现的有机转化之前,最好考虑原型光氧化还原催化剂Ru(bpy)〜(2+)3的光化学。在可见光区域吸收光子后,光催化剂以金属为中心的t_(2g)轨道之一中的电子被激发到以配体为中心的π*轨道上。这种转变被称为金属到配体的电荷转移(MLCT),并导致一种物质,其中金属已被有效地氧化为Ru(III)氧化态,并且配体骨架经历了单电子还原。

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