Two new oxalate-succinate uranium (VI) compounds with the guanidinium cations were synthesized and studied by single crystal X-ray diffraction, IR spectroscopy, thermogravimetric, and differential thermal analysis. The compounds are (CN₃H₆)₂[(UO₂)₂(oxal)(suc)₂]·4H₂O (1) and (CN₃H₆)₂[(UO₂)₂(oxal)₂(suc)]⋅2H₂O (2), where oxal = oxalate ion, C₂O₄²⁻ and suc = succinate ion, C₄H₄O₄²⁻. Crystal structures of both phases include 2D [(UO₂)₂(L)₃]^2- complexes (l – dicarboxylate ion) with the same ‘graphite sheet’ topological type. However, the coordination numbers of uranium in the sheets are different for the different oxalate: succinate ratio in formula (2:1 or 1:2). The coordination number preference (8 or 7) was found to depend on the oxalate: U(VI) ratio.

通过单晶X射线衍射，红外光谱，热重分析和差热分析，合成并研究了两种带有胍鎓阳离子的草酸-琥珀酸铀（VI）化合物。化合物为（CN ₃ H ₆）₂ [（UO ₂）₂（草酸）（suc）₂ ]·4H ₂ O（1）和（CN ₃ H ₆）₂ [（UO ₂）₂（草酸）₂（ SUC）]⋅2H ₂ O（2），其中oxal =草酸根离子，C ₂ Ò ₄ ^2-并且suc ＝琥珀酸根离子，C ₄ H ₄ O ₄ ^2-。两相的晶体结构均包括具有相同“石墨片”拓扑类型的2D [（UO ₂）₂（L）₃ ] ^2-配合物（l-二羧酸根离子）。但是，对于式（2：1或1：2）中不同的草酸盐：琥珀酸盐比率，片中铀的配位数不同。发现配位数优选（8或7）取决于草酸盐∶U（VI）的比例。