Chen Lanhua, Zheng Tao, Bao Songsong, Zhang Linjuan, Liu Hsin-Kuan, Zheng Limin, Wang Jianqiang, Wang Yaxing, Diwu Juan, Chai Zhifang, Albrecht-Schmitt Thomas E, Wang Shuao
School for Radiological and interdisciplinary Sciences (RAD-X), Soochow University, 199 Renai Road, Suzhou, 215123, China.
Collaborative Innovation Center of Radiation Medicine, Jiangsu Higher Education Institutions, 199 Renai Road, Suzhou, 215123, China.
Chemistry. 2016 Aug 16;22(34):11954-7. doi: 10.1002/chem.201602863. Epub 2016 Jul 15.
It is shown that U(V) O2 (+) ions can reside at U(VI) O2 (2+) lattice sites during mild reduction and crystallization process under solvothermal conditions, yielding a complicated and rare mixed-valent uranium phosphonate compound that simultaneously contains U(IV) , U(V) , and U(VI) . The presence of uranium with three oxidation states was confirmed by various characterization techniques, including X-ray crystallography, X-ray photoelectron, electron paramagnetic resonance, FTIR, UV/Vis-NIR absorption, and synchrotron radiation X-ray absorption spectroscopy, and magnetism measurements.
结果表明，在溶剂热条件下的温和还原和结晶过程中，U(V)O2(+)离子可以存在于U(VI)O2(2+)晶格位点上，生成一种复杂且罕见的同时含有U(IV)、U(V)和U(VI)的混合价态铀膦酸盐化合物。通过各种表征技术，包括X射线晶体学、X射线光电子能谱、电子顺磁共振、傅里叶变换红外光谱、紫外/可见-近红外吸收光谱、同步辐射X射线吸收光谱以及磁性测量，证实了三种氧化态铀的存在。
