High catalytic abilities of binuclear rhenium(I) complexes in the photochemical reduction of CO2 with a ruthenium(II) photosensitiser

Yusuke Tamaki; Daisuke Imori; Tatsuki Morimoto; Kazuhide Koike; Osamu Ishitani

doi:10.1039/C6DT00996D

High catalytic abilities of binuclear rhenium(i) complexes in the photochemical reduction of CO₂ with a ruthenium(ii) photosensitiser

Yusuke Tamaki,^a Daisuke Imori,^a Tatsuki Morimoto,^b Kazuhide Koike^c and Osamu Ishitani*^a

* Corresponding authors

^a Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-1, O-okayama, Meguro-ku, Tokyo 152-8550, Japan
E-mail: ishitani@chem.titech.ac.jp

^b Department of Applied Chemistry, School of Engineering, Tokyo University of Technology, 1404-1, Katakura, Hachioji, Tokyo 192-0982, Japan

^c National Institute of Advanced Industrial Science and Technology, Onogawa 16-1, Tsukuba 305-8569, Japan

Abstract

Photocatalytic systems for CO₂ reduction using a Ru(II) tris-diimine complex (Ru) as a photosensitiser and dinuclear Re(I) diimine tricarbonyl complexes (Re(n)Re), in which diimine ligands are connected by alkyl chains of various lengths (–C_nH_2n–: n = 2, 3, 4, 6, 14), as catalysts were investigated. The photocatalytic systems using Re(n)Re exhibited improved durability compared with that using the corresponding mononuclear Re(I) complex (Re); moreover, among the Re(n)Re, shorter alkyl chains in the bridging ligands induced greater durability. We found that the durability of the photocatalytic system depended on the decomposition speed of Ru, which could be suppressed using Re(n)Re with shorter alkyl chains.

This article is part of the themed collection: Small Molecule Activation

Article information

https://doi.org/10.1039/C6DT00996D

Article type

Paper

Submitted

14 Mar 2016

Accepted

29 Apr 2016

First published

16 May 2016

Download Citation

Dalton Trans., 2016,45, 14668-14677

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High catalytic abilities of binuclear rhenium(I) complexes in the photochemical reduction of CO₂ with a ruthenium(II) photosensitiser

Y. Tamaki, D. Imori, T. Morimoto, K. Koike and O. Ishitani, Dalton Trans., 2016, 45, 14668 DOI: 10.1039/C6DT00996D

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