The threading of bis(dialkylammonium) ions through the DB24C8-like openings of a molecular cage proceeds through a stepwise mechanism: formation of a face-to-face complex between the NH2+ centers and the crown ether, significant dissociation of this complex, and passage of the terminus of the cation through the macrocycle.
双(二烷基
铵)离子通过分子笼的 DB24C8 样开口的过程是一个循序渐进的机制:NH2+ 中心与
冠醚之间形成面对面的络合物,该络合物显著解离,阳离子的末端穿过大环。