Ionothermal synthesis of uranyl compounds that incorporate imidazole derivatives

Effect of Ionothermal Conditions on the Crystallization of Organically Templated Uranyl Sulfate Compounds

“…USND-1 was previously characterized and will be briefly described here since USND-2–6 are structurally related . The structural unit of USND-1 (Figure a) is a chain of uranyl pentagonal bipyramids and sulfate tetrahedra in which each uranyl ion is coordinated by one bidentate and three monodentate sulfate groups.…”

“…Powder X-ray diffraction (pXRD) patterns were collected for the products to confirm phase purity, the presence and identity of multiple phases, or the presence of USND-1 was previously characterized and will be briefly described here since USND-2−6 are structurally related. 23 The structural unit of USND-1 (Figure 2a) is a chain of uranyl pentagonal bipyramids and sulfate tetrahedra in which each uranyl ion is coordinated by one bidentate and three monodentate sulfate groups. The EMIm counter cations link the chains into an extended structure (Figure 2b).…”

“…Given the nature of ionic liquids, which are defined as materials composed of ionic species that are fluid below 100 °C, they have the potential to act as both a solvent and a templating agent through their organic-based cations . However, to date ionothermal synthesis methods have been applied to produce only relatively few uranyl compounds. − The specific roles of each reagent and heat treatment strategy relative to the final product in these syntheses have not been rigorously explored.…”

Effects of ionic liquid media on the cation selectivity of uranyl structural units in five new compounds produced using the ionothermal technique

“…The uranyl phosphate sheets display the uranophane topology that has previously been described from another ionothermal reaction. 35 However, the previous compound contains only interlayer NMIM cations without bridging uranyl pentagonal bipyramids and water molecules. A uranyl vanadate compound with this framework unit has also been reported that utilized a templating amine.…”

Ionothermal effects on low-dimensionality uranyl compounds using task specific ionic liquids

“…We seek to gain better insight into such relationships by synthesis of uranyl compounds at relatively low temperature in the absence of excess water by ionothermal reactions. 4 Ionic liquids (ILs) are a versatile class of salts that melt below 100 °C. There are many different classes of ionic liquids and a plethora of conceivable IL combinations.…”