从络合化学看,冠醚能选择性地与直径适合于本身环状结构空腔大小的离子形成稳定的络合物。环的大小,以氧乙烯((O—CH_2—CH_2)_n)的个数而定,可根据需要选择。 Warshawsky等人接连报道了他们1978年和1979年的研究成果,提出了聚假冠醚(polymeric pseudocrown ethers)的合成方法及其与过渡金属络阴离子的络合作用, From complex chemistry, crown ethers selectively form stable complexes with ions of a diameter that is appropriate for the size of their own ring-shaped cavity. The size of the ring, depending on the number of oxyethylene ((O-CH_2-CH_2) _n), can be selected as needed. Warshawsky et al. Reported on their research achievements in 1978 and 1979 successively, and proposed the synthesis of polymeric pseudocrown ethers and its complexation with transition metal anions,