Cui Wen, Wang Ruyu, Shu Xi, Fan Yu, Liu Yang, Jin Yongdong, Xia Chuanqin, Huang Chao
College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China.
Acta Crystallogr C Struct Chem. 2018 Mar 1;74(Pt 3):366-371. doi: 10.1107/S2053229618002279. Epub 2018 Feb 28.
The interaction between the uranyl cation, (UO), and organic species is of interest due to the potential applications of the resulting compounds with regard to nuclear waste disposal and nuclear fuel reprocessing. The hydrothermal reaction of various uranyl compounds with flexible zwitterionic 1,1'-[1,4-phenylenebis(methylene)]bis(pyridin-1-ium-4-carboxylate) dihydrochloride (Bpmb·2HCl) in deionized water containing drops of HSO resulted in the formation of a novel two-dimensional uranyl coordination polymer, namely poly[tetraoxido{μ-1,1'-[1,4-phenylenebis(methylene)]bis(pyridin-1-ium-4-carboxylate)}di-μ-sulfato-diuranium(VI)], [(UO)(SO)(CHNO)], (1). Single-crystal X-ray diffraction reveals that this coordination polymer exhibits a layered arrangement and the (UO) centre is coordinated by five equatorial O atoms. The structure was further characterized by FT-IR spectroscopy, powder X-ray diffraction (PXRD) and thermogravimetric analysis (TGA). The polymer shows high thermal stability up to 696 K. Furthermore, the photoluminescence properties of (1) has also been studied, showing it to exhibit a typical uranyl fluorescence.
由于所得化合物在核废料处理和核燃料后处理方面的潜在应用，铀酰阳离子（UO）与有机物种之间的相互作用备受关注。各种铀酰化合物与柔性两性离子1,1'-[1,4-亚苯基双（亚甲基）]双（吡啶-1-鎓-4-羧酸盐）二盐酸盐（Bpmb·2HCl）在含有几滴HSO的去离子水中进行水热反应，生成了一种新型二维铀酰配位聚合物，即聚[四氧化{μ-1,1'-[1,4-亚苯基双（亚甲基）]双（吡啶-1-鎓-4-羧酸盐）}二-μ-硫酸根二铀（VI）]，[(UO)(SO)(CHNO)]，（1）。单晶X射线衍射表明，这种配位聚合物呈现层状排列，且（UO）中心由五个赤道面的O原子配位。通过傅里叶变换红外光谱（FT-IR）、粉末X射线衍射（PXRD）和热重分析（TGA）对该结构进行了进一步表征。该聚合物在高达696 K的温度下表现出高的热稳定性。此外，还研究了（1）的光致发光性质，表明其呈现典型的铀酰荧光。
