Two organically templated uranium phosphites, （C4H12N）（UO2）（HPO3）（NO3） （Mr = 486.16） 1 and （C16H36N）2（UO2）2（H2PO3）2（HPO3）（NO3）2 （Mr= 1390.95） 2, were prepared by evaporation from aqueous solution...Two organically templated uranium phosphites, （C4H12N）（UO2）（HPO3）（NO3） （Mr = 486.16） 1 and （C16H36N）2（UO2）2（H2PO3）2（HPO3）（NO3）2 （Mr= 1390.95） 2, were prepared by evaporation from aqueous solution of uranyl nitrate, phosphite acid and their respective organic ammonium hydroxids. Their structures were determined by single-crystal X-ray diffraction and further characterized by infrared and fluorescence spectroscopy. In 1, pentagonal [UO7] bipyramids share comers with three [HPO3]2- tetrahedra and one edge with a [NO3]- anion to form [（UO2）- （HPO3）（NO3）]^- ladder-like chains parallel to the b axis. The structure of 2 is also based upon one-dimensional anionic [（UO2）2（H2PO3）2（HPO3）（NO3）2]2-chains of comer-sharing penta- gonal [UOT] bipyramids with [H2PO3]- and [HPO3] tetrahedra, which is still unknown in structural chemistry of uranium so far. Crystal data for 1： monoclinic, space group C2/m, a = 21.808（7）, b = 6.9605（15）, c = 8.357（2） A, β = 98.327（15）°, V= 1255.2（6） A^3, Z = 4, Dc = 2.573 g/cm^3, F（000） = 888, μ = 13.086 mm^-1 the final R = 0.0418 and wR = 0.0906 （I 〉 2σ（I））; and those for 2： monoclinic, space group C2/c, a = 36.4549（8）, b = 14.5296（11）, c = 20.8253（11） A, β = 101.7440（8）°, V= 10799.7（10） A3, Z = 8, Dc= 1.711 g/cm^3, F（000） = 5424,μ = 6.144 mm^-1, the final R= 0.0368 and wR= 0.0865 （I〉 2σ（I））.展开更多
文摘Two organically templated uranium phosphites, （C4H12N）（UO2）（HPO3）（NO3） （Mr = 486.16） 1 and （C16H36N）2（UO2）2（H2PO3）2（HPO3）（NO3）2 （Mr= 1390.95） 2, were prepared by evaporation from aqueous solution of uranyl nitrate, phosphite acid and their respective organic ammonium hydroxids. Their structures were determined by single-crystal X-ray diffraction and further characterized by infrared and fluorescence spectroscopy. In 1, pentagonal [UO7] bipyramids share comers with three [HPO3]2- tetrahedra and one edge with a [NO3]- anion to form [（UO2）- （HPO3）（NO3）]^- ladder-like chains parallel to the b axis. The structure of 2 is also based upon one-dimensional anionic [（UO2）2（H2PO3）2（HPO3）（NO3）2]2-chains of comer-sharing penta- gonal [UOT] bipyramids with [H2PO3]- and [HPO3] tetrahedra, which is still unknown in structural chemistry of uranium so far. Crystal data for 1： monoclinic, space group C2/m, a = 21.808（7）, b = 6.9605（15）, c = 8.357（2） A, β = 98.327（15）°, V= 1255.2（6） A^3, Z = 4, Dc = 2.573 g/cm^3, F（000） = 888, μ = 13.086 mm^-1 the final R = 0.0418 and wR = 0.0906 （I 〉 2σ（I））; and those for 2： monoclinic, space group C2/c, a = 36.4549（8）, b = 14.5296（11）, c = 20.8253（11） A, β = 101.7440（8）°, V= 10799.7（10） A3, Z = 8, Dc= 1.711 g/cm^3, F（000） = 5424,μ = 6.144 mm^-1, the final R= 0.0368 and wR= 0.0865 （I〉 2σ（I））.
