Lin Chia-Hui, Chen Chih-Shan, Shiryaev A A, Zubavichus Ya V, Lii Kwang-Hwa
Department of Chemistry, National Central University, Chungli, Taiwan.
Inorg Chem. 2008 Jun 2;47(11):4445-7. doi: 10.1021/ic800300v. Epub 2008 Apr 30.
A new uranium(V) silicate, K3(U3O6)(Si2O7), and the germanate analogue, Rb3(U3O6)(Ge2O7), have been synthesized under high-temperature, high-pressure hydrothermal conditions and characterized by single-crystal X-ray diffraction. Their structures contain uranate columns formed of triple octahedral chains of the alpha-UF5 type linked by disilicate (or digermanate) units to form a 3-D framework structure. The valence state of uranium is confirmed by X-ray photoelectron spectroscopy, X-ray absorption spectroscopy, and magnetic susceptibility.
