Catalytic Water‐Oxidation Activity of a Weakly Coupled Binuclear Ruthenium Polypyridyl Complex
作者:Tiago A. Matias、Ana P. Mangoni、Sergio H. Toma、Francisca N. Rein、Reginaldo C. Rocha、Henrique E. Toma、Koiti Araki
DOI:10.1002/ejic.201600889
日期:2016.12
oxidation of water by the binuclear complex [Ru2(H2O)2(bpy)2(tpy2ph)](PF6)4 [bpy = 2,2′‐bipyridine; tpy2ph = 1,3‐bis(4′‐2,2′:6′,2′′‐terpyridin‐4‐yl)benzene] was investigated comparatively to its mononuclear counterpart [Ru(H2O)(bpy)(phtpy)](PF6)2 (phtpy = 4′‐phenyl‐2,2′:6′,2′′‐terpyridine). These catalysts were prepared from the synthesis of their precursor chloride complexes, which were also extensively
双核络合物[Ru 2(H 2 O)2(bpy)2(tpy 2 ph)](PF 6)4 [bpy = 2,2'-联吡啶;相对于其单核对应物[Ru(H 2 O)(bpy)),对tpy 2 ph = 1,3-bis(4'-2,2':6',2'-terpyridin-4-yl)苯进行了研究(phtpy)](PF 6)2(phtpy = 4'-苯基-2-2,2':6',2''-叔吡啶)。这些催化剂是由其前体氯化物络合物的合成制备的,该化合物在这项工作中也得到了广泛表征。H 2 O–Ru II发现复合物经历质子偶联的电子传递过程产生的氧化还原物质HO-茹III,O =茹IV,和O =孺V。[Ru V 2(O)2(bpy)2(tpy 2 ph)] 6+和[Ru V(O)(bpy)(phtpy)] 3+是具有催化活性的物质,是通过铈和铈( IV)硝酸铵。在存在Ce IV的情况下,双核和单核物种产生O 2的催化速率为1