Mono-C-substitution of the 1,4,7-triazacyclononane ring induces formation of single enantiomers of Eu(III) complexes with nonadentate N6O3 ligands. The absolute configuration of each complex is determined by the stereogenicity of the C-substituent, revealed by comparison of the sign and sequence of CPL transitions for a series of complexes.
1,4,7-
三嗪环的单C取代诱导形成具有非配位
N6O3配体的Eu(III)配合物的单一对映体。每个配合物的绝对构型由C取代基的立体
化学决定,通过比较一系列配合物的圆偏振荧光(
CPL)跃迁的符号和顺序得以揭示。