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.

Graphical abstractTwo novel uranyl compounds with [UO8(NO3)n] (n = 1, 2) based structural units.Figure optionsDownload full-size imageDownload as PowerPoint slide