Polymer complexes XLII. Supramolecular assemblies comprised of macrocyclic polymer complexes

Two novel supramolecular complexes of types UO2(L)(H2L)(OH2)(2) and UO2(HLn)(2)(OAC)(2) (H2L is a potential fourdentate ligand derived from hydrazine hydrate and malonylchloride and HLn is a potential bidentate ligand derived from coupling of allylazo-beta-diketone) have been synthesized and characterized by elemental analyses, conductance and spectral (H-1-NMR, IR and electronic) measurements. The first type of complex contains terminal hydrazinic nitrogen atoms with an unshared electron pair and may take part in nucleophilic condensations. Therefore, the reactions of these complexes with allyl-beta-diketone and/or malonic dihydrazide, which cause ring closure and formation of supramolecular macrocyclic ligand complexes, have also been studied. Two types of supramolecular cyclic products have been isolated by carrying out the reactions by different methods. The uranyl complexes are six coordinate. The IR spectra of these cyclic products are reported.