Antimony Complexes for Electrocatalysis: Activity of a Main‐Group Element in Proton Reduction
Autor: | Gary W. Brudvig, Robert H. Crabtree, Svante Hedström, Victor S. Batista, Kelly L. Materna, Jianbing Jiang, Ke R. Yang |
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Rok vydání: | 2017 |
Předmět: |
010405 organic chemistry
Ligand chemistry.chemical_element General Medicine General Chemistry 010402 general chemistry Photochemistry Electrocatalyst 01 natural sciences Porphyrin Combinatorial chemistry Quantum chemistry Catalysis 0104 chemical sciences chemistry.chemical_compound chemistry Catalytic cycle Antimony Main group element |
Zdroj: | Angewandte Chemie International Edition. 56:9111-9115 |
ISSN: | 1521-3773 1433-7851 |
Popis: | Main-group complexes are shown to be viable electrocatalysts for the H2 -evolution reaction (HER) from acid. A series of antimony porphyrins with varying axial ligands were synthesized for electrocatalysis applications. The proton-reduction catalytic properties of TPSb(OH)2 (TP=5,10,15,20-tetra(p-tolyl)porphyrin) with two axial hydroxy ligands were studied in detail, demonstrating catalytic H2 production. Experiments, in conjunction with quantum chemistry calculations, show that the catalytic cycle is driven via the redox activity of both the porphyrin ligand and the Sb center. This study brings insight into main group catalysis and the role of redox-active ligands during catalysis. |
Databáze: | OpenAIRE |
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