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一种新的光引发电子收集结构基序:Ru,Rh 双金属为通过 Ru,Rh,Ru 超分子光催化还原水产生 H2 提供了深入了解

A new structural motif for photoinitiated electron collection: Ru,Rh bimetallics providing insight into H2 production via photocatalysis of water reduction by Ru,Rh,Ru supramolecules.

机构信息

Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061-0212, USA.

出版信息

Chem Commun (Camb). 2011 Apr 21;47(15):4451-3. doi: 10.1039/c0cc05157h. Epub 2011 Mar 9.

DOI:10.1039/c0cc05157h
PMID:21387071
Abstract

Ru,Rh,Ru complexes are photocatalysts for the reduction of H(2)O to H(2)via a Rh(I) intermediate. The herein reported Ru,Rh bimetallics undergo PEC but do not catalyze the reduction of H(2)O, establishing intact supramolecules are photoactive in the Ru,Rh,Ru systems. The Ru,Rh(I) photoproduct dimerizes via Rh-Rh bond formation, deactivating the Rh(I) center sterically prohibited in the Ru,Rh,Ru trimetallic systems.

摘要

Ru、Rh、Ru 配合物是通过 Rh(I)中间体将 H(2)O 还原为 H(2)的光催化剂。本文报道的 Ru、Rh 双金属配合物进行 PEC 但不催化 H(2)O 的还原,这表明在 Ru、Rh、Ru 体系中完整的超分子是光活性的。Ru、Rh(I)光产物通过 Rh-Rh 键形成二聚化,从而使 Ru、Rh、Ru 三金属体系中空间位阻较大的 Rh(I)中心失活。

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