Sulfur substitution in a Ni(cyclam) derivative results in lower overpotential for CO<sub>2</sub> reduction and enhanced proton reduction
作者:P. Gerschel、K. Warm、E. R. Farquhar、U. Englert、M. L. Reback、D. Siegmund、K. Ray、U.-P. Apfel
DOI:10.1039/c8dt04740e
日期:——
The replacement of the opposing nitrogen atoms in 1,4,8,11-tetraazacyclotetradecane (cyclam) with two sulfur atoms in 1,8-dithia-4,11-diazacyclotetradecane (dithiacyclam) enables the electrochemical reduction of protons and CO2via the corresponding nickel(ii) complex at more positive potentials. In addition, a 10-fold enhancement in the proton reduction rate of [Ni(dithiacyclam)]2+ relative to [Ni(cylcam)]2+
用1,8-二硫代-4,11-二氮杂环十四烷(dithiacyclam)中的两个硫原子取代1,4,8,11-四氮杂环十四烷(环已烷)中的相对氮原子能够通过相应的镍电化学还原质子和CO2 (ii)具有更积极的潜力。另外,观察到相对于[Ni(圆筒状凸轮)] 2+,[Ni(二硫代环酰胺)] 2+的质子减少率提高了10倍。这项研究为Nature选择主要使用基于硫的配体平台实现生物质子和CO2减少提供了至关重要的见解。