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.
Key words crown polyethers - synthesis - complexation - acid-base properties - potentiometric titration
Deceased.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 9, pp. 1789–1791. September, 1998.