Crystal chemistry of uranyl halides containing mixed (UO 2)(XmOn)5 bipyramids (X = Cl, Br): Synthesis and crystal structure of Cs2(UO2)(NO3)C 13

被引：0
|
作者：
Nazarchuk E.V. [1 ]
Siidra O.I. [1 ]
Krivovichev S.V. [1 ]
机构：
[1] Department of Crystallography, Faculty of Geology, Saint-Petersburg State University, St. Petersburg, 199034
来源：
Zeitschrift fur Naturforschung - Section B Journal of Chemical Sciences | 2011年 / 66卷 / 02期
关键词：
Chloride; Crystal Chemistry; Crystal Structure; Nitrate; Uranyl;
D O I：
10.1515/znb-2011-0206
中图分类号：
学科分类号：
摘要：
Single crystals of Cs2(UO2)(NO3)Cl 3 were prepared by a hydrothermal method at 205 °C. The crystal structure has been solved by Direct Methods: monoclinic, P21/n, a = 10.3748(13), b = 9.4683(13), c = 12.5535(16) Å β = 110.280(2)°, V = 1156.7(3) Å3, R1 = 0.029. In the structure, strongly bonded linear uranyl cations UO2 2+ are equatorially coordinated by two O and three Cl atoms to form (UO2)Cl3O2 pentagonal bipyramids. Each bipyramid shares its O-O edge with an adjacent (NO3)? anion to form finite clusters with the chemical composition [(UO2)(NO3)Cl 3]2?. The Cs+ cations provide three-dimensional connectivity of the structure by forming Cs-O and Cs-Cl contacts to the uranyl nitrate chloride complexes. Related structures of mixed-ligand uranyl halides are compared.© 2011 Verlag der Zeitschrift für Naturforschung, Tübingen.
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页码：142 / 146
页数：4
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