Premium
Electrochemical Water Oxidation Catalyzed by N 4 ‐Coordinate Copper Complexes with Different Backbones: Insight into the Structure‐Activity Relationship of Copper Catalysts
Author(s) -
Shen Junyu,
Zhang Xiongfei,
Cheng Minglun,
Jiang Jian,
Wang Mei
Publication year - 2020
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201902035
Subject(s) - copper , catalysis , electrochemistry , chemistry , ligand (biochemistry) , crystal structure , diamine , piperazine , crystallography , inorganic chemistry , stereochemistry , polymer chemistry , organic chemistry , electrode , biochemistry , receptor
Copper complexes with a general formula of [(L)Cu(OH 2 )](BF 4 ) 2 ( 1 , L1= N,N′ ‐dimethyl‐ N,N′ ‐bis(pyridin‐2‐ylmethyl)‐1,2‐diaminoethane; 2 , L2= N,N′ ‐bis(pyridin‐2‐ylmethyl)piperazine); 3 , L3= N,N′ ‐bis(pyridin‐2‐ylmethyl)diazepane) were prepared as molecular catalysts for oxygen evolution reaction. These catalysts have the same first coordination environment but different backbones of diamine‐dipyridine N 4 ‐ligands. Single crystal X‐ray diffraction studies on the molecular structures of 1 – 3 revealed that the backbone rigidity of the N 4 ‐ligand has apparent influence on the N py −Cu−N′ py open angle of copper complexes. Comparative studies manifested that the subtle structural change caused by the backbone rigidity of N 4 ‐ligands has an important influence on the catalytic performance and reaction pathway of copper catalysts for electrochemical water splitting.