Enhancement of electrocatalytic abilities for reducing carbon dioxide: functionalization with a redox-active ligand-coordinated metal complex.

DALTON TRANSACTIONS(2018)

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摘要
A binary system consisting of a ditopic planar pseudo-pincer ligand (qlca = quinoline-2-carbaldehyde (pyridine-2-carbonyl) hydrazone) coordinated to two metal centres affording [{Ru(bpy)(2)}(-qlca)NiCl2]Cl4H(2)OCH(3)OH (2) (bpy = 2,2-bipyridine) is reported. The Ni2+ moiety acts as the electrocatalytic active site for CO2 reduction to CO. The turnover frequency (TOF) increased from 0.83 s(-1) for [Ni(qlca)Cl-2] (3) to 120 s(-1) for 2, and the overpotential is 350 mV less than that for 3 due to the electronic influence of the {Ru(bpy)(2)}(2+) moiety on the catalytic active site.
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关键词
electrocatalytic abilities,carbon dioxide,metal complex,redox-active,ligand-coordinated
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