Electrocatalytic Dihydrogen Production with a Robust Mesoionic Pyridylcarbene Cobalt Catalyst.
Electrocatalytic Dihydrogen Production with a Robust Mesoionic Pyridylcarbene Cobalt Catalyst.
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DOI：
10.1002/anie.201506061
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发表时间：
2015-11
影响因子：
--
通讯作者：
Margarethe van der Meer;E. Glais;Inke Siewert;B. Sarkar
中科院分区：
文献类型：
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作者：
Margarethe van der Meer;E. Glais;Inke Siewert;B. Sarkar
一个钴（III）配合物与mesoionic吡啶基卡宾配体。这种复合物是一种高效的电催化剂，用于在非常低的过电位和高周转时，使用（玻璃碳）GC电极的H2生产。相应的三唑配合物在相同条件下不显示任何催化活性。Co-C（卡宾）键对酸的显著稳健性可能是该催化剂的高效率的原因。因此，本研究结果开辟了新的途径，为卡宾为基础的配体产生功能模型的氢化酶。
A Co(III) complex with a mesoionic pyridylcarbene ligand is presented. This complex is an efficient electrocatalyst for H2 production at very low overpotential and high turnovers when using a (glassy carbon) GC electrode. The corresponding triazole complexes display no catalytic activity whatsoever under identical conditions. The remarkable robustness of the Co-C(carbene) bond towards acids is likely responsible for the high efficiency of this catalyst. The present results thus open new avenues for carbene-based ligands for generating functional models for hydrogenases.