Seven double-armed cyclens bearing twoaromatic side-arms, at the 1- and 7-positions of the cyclens, were prepared via three steps from dimethyl 2,2′-iminodiacetate. The X-ray structures of the Ag+ complexes and Ag+-ion-induced 1H NMR spectral changes suggest that the twoaromatic side-arms cover the Ag+ ions incorporated in the ligand cavities, as if the aromatic ring “petals” catch the Ag+ ions in
经由三个步骤,由2,2'-亚氨基二乙酸二甲酯经三个步骤制备了七个带有两个芳香族侧臂的双臂周期环,它们位于周期环的1和7位。Ag +络合物的X射线结构和Ag + -离子诱导的1 H NMR光谱变化表明,两个芳族侧臂覆盖了结合在配体腔中的Ag +离子,好像芳环“花瓣”抓住了一样用真正的食虫植物(维纳斯捕蝇器)用两片叶子捕获昆虫的方式中的Ag +离子。还据报道,芳族侧臂之间的CH-π相互作用以及Ag + -π相互作用对于双臂和四臂旋光子充当精子分子至关重要。