A cyclopendant complexon based on dibenzo-18-crown-6

Article abstract of DOI:10.1007/BF02495697

A derivative of dibenzo-18-crown-6 containing dihydroxyphosphorylmethyl groups in the 4, 5, 4′, and 5′ positions of the benzene ring has been synthesized. Unlike dibenzo-18-crown-6, its phosphorylated derivative does not form stable complexes with cations of alkali and alkaline-earth metals. Complexes with transition metals are water-insoluble in most cases.