Abstract

An X-ray diffraction study of crystals of two oxalate-containing uranyl complexes: (NH₄)₂UO₂(C₂O₄)₂·Urea·H₂O (I), Rb₂UO₂(C₂O₄)₂·Urea·H₂O (II) and a new plutonyl complex (NH₄)₂PuO₂(C₂O₄)₂·Urea·H₂O (III), was performed. Crystals I–III contain island complexes [AnO₂(C₂O₄)₂(Urea)]^2– (An = U or Pu) of AB⁰¹₂M¹ group ( UO₂²⁺ or PuO₂²⁺, B⁰¹ = C₂O₄^2–, M¹ = Urea). Compounds I–III are found to be isostructural. An effect of the nature of outer-sphere cations on the features of intermolecular interactions in crystal structures was considered using the Voronoi–Dirichlet molecular polyhedron method.

中文翻译：

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铀和钚与尿素的二草酸配合物的合成及 X 射线结构研究

摘要

两种含草酸盐的铀酰配合物晶体的 X 射线衍射研究：(NH ₄ ) ₂ UO ₂ (C ₂ O ₄ ) ₂ ·Urea·H ₂ O ( I ), Rb ₂ UO ₂ (C ₂ O ₄ ) ₂ ·Urea·H ₂ O ( II ) 和新的钚基配合物(NH ₄ ) ₂ PuO ₂ (C ₂ O ₄ ) ₂ ·Urea·H ₂ O ( III )，被执行。晶体I-III含有岛复合物[AnO ₂ (C ₂ O ₄ ) ₂ (Urea)] ^2– (An = U or Pu) AB ⁰¹ ₂ M ¹基团（UO ₂ ²⁺或PuO ₂ ²⁺ , B ⁰¹ = C ₂ O ₄ ^2– , M ¹ = 尿素)。发现化合物I-III是同构的。使用 Voronoi-Dirichlet 分子多面体方法考虑了外球阳离子的性质对晶体结构中分子间相互作用特征的影响。