The formation of strong molecular complexes of calix[4]recorcinolarene with
the polyfunctional phosphoorganic compound diglycidylmethyl phosphonate wa
s observed in organic media. Complexes of different compositions were obtai
ned with the ratio of the initial reagents of 1 : 1 and 1 : 4. Three comple
xes were isolated and characterized by elemental analysis; their H-1 and C-
13 NMR spectroscopic parameters are also discussed.