Self-assembly and photophysical properties of lanthanide dinuclear triple-helical complexes
作者:Claude Piguet、Jean Claude G. Buenzli、Gerald Bernardinelli、Gerard Hopfgartner、Alan F. Williams
DOI:10.1021/ja00071a032
日期:1993.9
The dinucleating ligand bis[ 1- methyl-2-(6'- [ 1”-(3,5 imethoxybenzyl)benzimidazol-2~'-ylp]y rid-2'-y1)benzimidazol- 5-yllmethane (L) reacts with lanthanide perchlorates to give dinuclear 2:3 complexes [Lnz(L)#+ (Ln = La, Eu, Gd, Tb, and Lu). Detailed ES-MS, lH-NMR, luminescence, and spectrophotometric measurements in acetonitrile show that the cations [Ln2(L)#+ are produced by strict self-assembly
双成核配体双[1-甲基-2-(6'-[1”-(3,5-异甲氧基苄基)苯并咪唑-2~'-ylp]yrid-2'-y1)苯并咪唑-5-基甲烷(L)反应与镧系元素高氯酸盐生成双核 2:3 配合物 [Lnz(L)#+ (Ln = La、Eu、Gd、Tb 和 Lu)。乙腈中的详细 ES-MS、1H-NMR、发光和分光光度测量表明,阳离子 [Ln2(L)#+ 是通过严格的自组装产生的,并在溶液中采用三螺旋结构(伪 D3s 对称性)。[EU~(L)~] C~O~)~((1C1H, E~UC2NC1)9s~H 177N39036_Cl6,a = 17.634- (3) A, b = 21.408(4) A, c = 29.437(7) A, a = 82.13(1)', /3 = 85.76(1)', y = 89.79(1)', 三斜, P1, Z = 2) 显示双核假 D3 三重阳离子, [Eu2(L)#+