A Dinuclear Cobalt Cryptate as a Homogeneous Photocatalyst for Highly Selective and Efficient Visible‐Light Driven CO2 Reduction to CO in CH3CN/H2O Solution,Angewandte Chemie International Edition

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A Dinuclear Cobalt Cryptate as a Homogeneous Photocatalyst for Highly Selective and Efficient Visible‐Light Driven CO2 Reduction to CO in CH3CN/H2O Solution
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2016-12-13 , DOI: 10.1002/anie.201610607
Ting Ouyang ₁ , Hai-Hua Huang ₁ , Jia-Wei Wang ₁ , Di-Chang Zhong ₂ , Tong-Bu Lu _{1,

2}

Affiliation

A dinuclear cobalt complex [Co₂(OH)L¹](ClO₄)₃ (1, L¹=N[(CH₂)₂NHCH₂(m‐C₆H₄)CH₂NH(CH₂)₂]₃N) displays high selectivity and efficiency for the photocatalytic reduction of CO₂ to CO in CH₃CN/H₂O (v/v=4:1) under a 450 nm LED light irradiation, with a light intensity of 100 mW cm⁻². The selectivity reaches as high as 98 %, and the turnover numbers (TON) and turnover frequencies (TOF) reach as high as 16896 and 0.47 s⁻¹, respectively, with the calculated quantum yield of 0.04 %. Such high activity can be attributed to the synergistic catalysis effect between two Co^II ions within 1, which is strongly supported by the results of control experiments and DFT calculations.

中文翻译：

一种双核钴酸盐作为均相光催化剂，用于在CH3CN / H2O溶液中高效选择性地将可见光驱动的CO2还原为CO

双核钴络合物[Co ₂（OH）L ¹ ]（ClO ₄）₃（1，L ¹ = N [（CH ₂）₂ NHCH ₂（m -C ₆ H ₄）CH ₂ NH（CH ₂）₂ ] ₃ N）在450 nm LED光照射下以100 mW cm的光强度显示出在CH ₃ CN / H ₂ O（v / v = 4：1）中将CO ₂光催化还原为CO的高选择性和高效率。⁻²。选择性高达98％，周转数（TON）和周转频率（TOF）分别高达16896和0.47 s ^-1，计算的量子产率为0.04％。如此高的活性可以归因于1内两个Co ^II离子之间的协同催化作用，而控制实验和DFT计算的结果则有力地证明了这一点。

更新日期：2016-12-13

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