News from an Old Ligand: The Triple-Decker Ion Triple, Tris(|18]Crown-6)- disodium Bis(tetraphenylcyclopentadienide)

摘要

The discovery of the crown ethers and cryptands, which selectively complex alkali metal cations, has stimulated a wealth of investigations into other host molecules with modified cavities, their changes on metal cation insertion, and self-organizationphenomena both for selected model compounds and bioreceptors.