Ruthenium water oxidation catalysts containing the non-planar tetradentate ligand, biisoquinoline dicarboxylic acid (biqaH<sub>2</sub>)
作者:Dominik Scherrer、Mauro Schilling、Sandra Luber、Thomas Fox、Bernhard Spingler、Roger Alberto、Craig J. Richmond
DOI:10.1039/c6dt03880h
日期:——
Two ruthenium complexes containing the tetradentate ligand [1,1′-biisoquinoline]-3,3′-dicarboxylic acid, and 4-picoline or 6-bromoisoquinoline as axial ligands have been prepared. The complexes have been fully characterised and initial studies on their potential to function as molecular water oxidation catalysts have been performed. Both complexes catalyse the oxidation of water in acidic media with
制备了两种含有四齿配体[1,1′-二异喹啉] -3,3′-二羧酸和4-甲基吡啶或6-溴异喹啉作为轴向配体的钌配合物。已经对该配合物进行了充分的表征,并且已经对其作为分子水氧化催化剂的潜力进行了初步研究。两种配合物均通过Ce IV催化酸性介质中水的氧化作为化学计量的化学氧化剂,尽管与密切相关的Ru-bda和Ru-pda类似物相比,转换数和转换频率适中。通过密度泛函理论计算获得了水亲核攻击和分子间偶联途径的障碍,并且通过对理论和实验结果的综合分析,阐明了配体构架对于确定最有利的反应途径的关键影响。