voltammetry and controlled-potential electrolysis showed that [NiII2L13−14]4+ can serve as an electrocatalyst for water reduction to produce H2. The electrocatalytic efficiency for H2 produclion at −1.5 V was found to be as follows: [NiII2L14−14]4+ (L14−14: 6,6′-bi(1,4,8,11-tetraazacyclotetradecane))>[NiII2L13−14]4+≈[NiIIL14]2+ (L14: 1,4,8,11 -tetraazacyclotetradecane)>>[NiII2L13−13]4+ (L13−13: 12,12′-bi(1,4
一种新的双大环
配体,其中 13 和 14 元环通过 C-C 键连接在一起,6-(1,4,7,10-四氮杂-12-
环十三烷基)-1,4,8,11-合成了四
氮杂环十四烷 (L13-14) 及其二
镍 (II) 配合物 [NiII2L13-14]4+。[NiII2L13-14]4+ 的吸收光谱和循环伏安图表明它具有 13 和 14 元环的性质。循环伏安法和可控电位电解表明 [NiII2L13-14]4+ 可以作为
水还原生成 H2 的电催化剂。发现在-1.5 V下产生H2的电催化效率如下:[NiII2L14-14]4+ (L14-14: 6,6'-bi(
1,4,8,11-四氮杂环十四烷))>[NiII2L13 −14]4+≈[NiIIL14]2+ (L14: 1,4,8,11 -四
氮杂环十四烷)>>[NiII2L13−13]4+ (L13−13: 12,12'-bi(1,4,7) ,10-四氮杂
环十三烷))。