Notable differences between oxidized diruthenium complexes bridged by four isomeric diethynyl benzodithiophene ligands
作者:Ya-Ping Ou、Jing Zhang、Fuxing Zhang、Daizhi Kuang、František Hartl、Li Rao、Sheng Hua Liu
DOI:10.1039/c6dt00109b
日期:——
diruthenium complexes [(η5-C5Me5)Ru(dppe)}2(μ-CC–L–CC)] featuring different bridging isomeric diethynyl benzodithiophenes viz. L = benzo[1,2-b;4,5-b′]dithiophene (complex 1), benzo[2,1-b;4,5-b′]dithiophene (complex 2), benzo[1,2-b;3,4-b′]dithiophene (complex 3) and benzo[1,2-b;4,3-b′]dithiophene (complex 4), were synthesized and characterized by molecular spectroscopic and crystallographic methods. The subtle
四个新的二钌配合物[(η 5 -C 5我5)的Ru(DPPE)} 2(μ-C C-L-C C)]设有不同桥接的异构体二乙炔苯并二噻吩即。L =苯并[1,2- b ; 4,5- b ']二噻吩(配合物1),苯并[2,1- b ; 4,5- b ']二噻吩(配合物2),苯并[1,2- b ; 3,4- b '] dithiophene(络合物3)和苯并[1,2- b ; 4,3- b '] dithiophene(络合物4),通过分子光谱和晶体学方法合成和表征。由二乙炔基苯并二噻吩异构体引入的分子结构的细微变化对氧化配合物的稳定性及其在可见光-近红外和红外光谱域的吸收特性有显着影响。通过循环伏安法,UV-vis-NIR和IR光谱电化学以及DFT和TDDFT计算研究了稳定的氧化络合物[ 1 ] n +和[ 4 ] n +(n = 1,2)的电子性质。结果证明了母体1和4氧化的大部分桥位特征。阳离子[