Investigation of uranyl sulfate complexes with N-methyl substituted amides

Methods of IR spectroscopy, thermal and X-ray analyses were used for physicochemical investigation into UO2SO4·2L (L-N,N-dimethylformamide; N,N-dimethylacetamide or N,N,N',N'-tetramethylcarbamide). Belonging of compounds to AT11M1/2 crystallochemical group of uranyl complexes with trans-position of neutral ligands and tridentate bridge-cyclic (T11) type of sulfate-group coordination was established. Crystallographic characteristics of compounds were obtained. Spectroscopic criterion of distinguishing types of sulfate-ion coordination (T3 or T11) was suggested