Novel [(UO2)O6(NO3)n] (n = 1, 2) based units in organically templated uranyl compounds

• Single crystals of novel organically templated uranyl compounds were prepared by evaporation from aqueous solution.
• Both structures demonstrate unique structural topologies.
• Inorganic substructures interact with organic molecules exclusively via rather weak hydrogen bonding.
• Two major types of structural organization are observed.

Two novel organically templated (CH3)2(NH2)2[(UO2)2(NO3)2(CrO4)2(H2O)]H2O (1) and (15-crown-5)2[(UO2)2(H2O)4(O2)(NO3)2](H2O)3.5 (2) compounds were obtained at room temperature in chromate containing systems from aqueous solutions. The structure of 1 is the first observation of one-dimensional unit (chain) with two different (UO2)2+ coordination geometries (UrO5, UrO6) in uranyl oxocompounds with TO4 tetrahedral oxoanions. 2 is rare example of organically templated uranyl compound containing peroxide component with neutral organic and inorganic constituents.

Two novel uranyl compounds with [UO8(NO3)n] (n = 1, 2) based structural units.Figure optionsDownload as PowerPoint slide