Visible-Light-Driven C–N Bond Formation by a Hexanickel Cluster Substituted Polyoxometalate-Based Photocatalyst
作者:Jie Li、Jiachen jiao、Jiangnan Chang、Mingxue Li、Qiuxia Han
DOI:10.1021/acs.inorgchem.1c01311
日期:2021.7.5
A powerful and attractive route to develop novel photocatalysts for C–N bond formation involves the use of pyrrolidine as the substrate and cocatalyst simultaneously. Herein, a new polyoxometalate (POM)-based metal–organic framework, namely, [Ni6(OH)3(H2O)9(DPNDIH)(SiW9O34)]2·2H2O (SiW9Ni6-DPNDI) (DPNDI = N,N′-di(4-pyridyl)-1,4,5,8-naphthalenediimide), was prepared by incorporating a Ni6 cluster-substituted
开发用于形成 C-N 键的新型光催化剂的强大而有吸引力的途径涉及同时使用吡咯烷作为底物和助催化剂。在此,一种新的多金属氧酸盐 (POM) 基金属有机骨架,即 [Ni 6 (OH) 3 (H 2 O) 9 (DPNDIH)(SiW 9 O 34 )] 2 ·2H 2 O (SiW 9 Ni 6 -DPNDI) (DPNDI = N , N '-di(4-pyridyl)-1,4,5,8-naphthalenediimide),通过加入 Ni 6簇取代的 POM 阴离子和光敏剂 (DPNDI) 形成框架。SiW 9 Ni 6与DPNDI之间的阴离子…π相互作用和共价键有利于电子的连续分离和转移。在可见光照射下,DPNDI 可以很容易地被激发以生成自由基物种 DPNDI*,可以在电子供体吡咯烷的存在下进一步激发,以激活惰性 O 2。SiW 9 Ni 6 -DPNDI通过DPNDI和SiW 9 Ni