Preparation and infrared spectroscopic characterization of some (oxydiacetato)uranyl(6) complexes

Polymeric complexes, [UO2(oda)]n(oda = oxydiacetate, O2CCH2OCH2CO22–, n=∞), have been prepared, from the reaction of uranyl(VI) ions and oxydiacetic acid or its disodium salt, and characterized, mainly by i.r. spectroscopy. The complex Na2[UO2(oda)2],nH2O (n= 2 or 3) was obtained when an excess of the ligand was used in the reaction. In the presence of pyridine N-oxide(Opy), both monomeric [UO2(oda)(Opy)2] and polymeric [UO2(oda)-(Opy)]n(n=∞) complexes were obtained.