Yttrium(III) Complexes with Carbamide and Dimethylacetamide: Composition, Structure, and Thermal Decomposition

Yttrium(III) complexes with carbamide (Ur) and N,N-dimethylacetamide (DMAA) of composition [Y(H2O)(Ur)2(NO3)3] (I), [Y(Ur)3(NO3)3] (II), and [Y(DMAA)3(NO3)3] (III) have been synthesized. Their composition, structural features, and thermolysis processes in a wide temperature range have been determined using physicochemical methods (elemental analysis, IR spectroscopy, X-ray powder diffraction, single-crystal X-ray diffraction, thermogravimetric analysis, and differential scanning calorimetry). It has been shown that the isolated complexes can be used for the synthesis of nanosized yttrium oxide.