Department of Civil Engineering and Geological Sciences, University of Notre Dame, Notre Dame, Indiana 46556, United States.
Inorg Chem. 2012 Jul 2;51(13):7185-91. doi: 10.1021/ic300240s. Epub 2012 Jun 11.
A uranyl triazole (UO(2))(2)UO(4)(trz)(2)(2) (1) (trz = 1,2,4-triazole) was prepared using a mild solvothermal reaction of uranyl acetate with 1,2,4-triazole. Single-crystal X-ray diffraction analysis of 1 revealed it contains sheets of uranium-oxygen polyhedra and that one of the U(VI) cations is in an unusual coordination polyhedron that is intermediate between a tetraoxido core and a uranyl ion. This U(VI) cation also forms cation-cation interactions (CCIs). Infrared, Raman, and XPS spectra are provided, together with a thermogravimetric analysis that demonstrates breakdown of the compound above 300 °C. The UV-vis-NIR spectrum of 1 is compared to those of another compound that has a range of U(VI) coordination enviromments.
一种铀三唑（UO(2))(2)UO(4)(trz)(2)(2)（1）（trz = 1,2,4-三唑）是通过温和的溶剂热反应，用乙酸铀酰和 1,2,4-三唑制备而成的。对 1 的单晶 X 射线衍射分析表明，它含有铀氧多面体片层，其中一个 U(VI) 阳离子处于一种不寻常的配位多面体中，它介于四氧化核和铀酰离子之间。这个 U(VI) 阳离子也形成阳离子-阳离子相互作用（CCIs）。提供了红外、拉曼和 XPS 光谱，以及热重分析，表明化合物在 300°C 以上分解。1 的紫外可见近红外光谱与另一种具有多种 U(VI) 配位环境的化合物的光谱进行了比较。
