The crystal structure and atomic arrangement of uranyl acetate dihydrate, UO₂(CH₃COO)₂·2H₂O, have been determined by a single-crystal X-ray diffraction study. The crystal is orthorhombic, space group Pnam, with . The structure was solved by Fourier methods and refined to R = 0·041 for 821 observed reflections. The coordination sphere of the uranium contains seven oxygen atoms approximating a pentagonal bipyramid. One-half of the acetate ions link adjacent bipyramids to form chains, while the remaining acetate ions are chelated to individual uranium atoms. Only one of the water molecules is bonded directly to the uranium.

中文翻译：

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乙酸铀酰二水合物的晶体和分子结构

通过单晶X射线衍射研究确定了乙酸铀酰二水合物UO ₂（CH ₃ COO）₂ ·2H ₂ O的晶体结构和原子排列。晶体是正交晶体，空间群Pnam，具有。用傅立叶方法求解该结构，并针对821个观察到的反射将其精炼为R = 0·041。铀的配位球包含七个氧原子，近似五边形双锥体。一半的乙酸根离子将相邻的双锥体相连，形成链，而其余的乙酸根离子则被螯合到各个铀原子上。只有一个水分子直接与铀结合。