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Crystal structure of K4Pu(SO4)(4)center dot 2H(2)O

机译:K4Pu(SO4)(4)中心点2H(2)O的晶体结构

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The crystal structure of potassium plutonium(IV) tetrasulphate, K4Pu(SO4)(4). 2H(2)O has been investigated and resolved by Rietveld refinement of X-ray powder diffraction data. The Compound crystallises in a monoclinic unit cell with lattice parameters a=1.24175(7) nm, b=1.11583(7) nm, c=1.35530(9) nm, beta =111.81(1)degrees, space group P2(1)/c and Z=4. The structure consists of dimeric [(SO4)(3)Pu(SO4)(2)Pu(SO4)(3)](8-) anions in which each plutonium has nine oxygen atoms from five sulphate groups coordinated to it at an average Pu-O distance of 0.739(4) nm, forming distorted monocapped square antiprism geometry. Bridging sulphate groups are tridentate while others are bidentate chelating type. The two water molecules are not coordinated to the plutonium atom in the structure. (C) 2000 Elsevier Science B.V. All rights reserved. [References: 12]
机译:四硫酸钾((IV)K4Pu(SO4)(4)的晶体结构。 2H(2)O已通过Rietveld精制X射线粉末衍射数据进行了研究和解决。该化合物在晶格参数为a = 1.24175(7)nm,b = 1.11583(7)nm,c = 1.35530(9)nm,β= 111.81(1)度,空间群P2(1)/的单斜晶胞中结晶c和Z = 4。该结构由二聚[[SO4](3)Pu(SO4)(2)Pu(SO4)(3)](8-)阴离子组成,其中每个p均具有五个与之配位的硫酸盐基团中的9个氧原子,平均Pu-O距离为0.739(4)nm,形成扭曲的单峰方形反棱镜几何形状。桥接硫酸盐基团是三齿的,而其他的是双齿螯合型的。这两个水分子在结构中不与the原子配位。 (C)2000 Elsevier Science B.V.保留所有权利。 [参考:12]

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