Synthesis and structural studies of a new potassium uranyl selenate K(H5O2)[(UO2)2(SeO4)3(H2O)] with strongly deformed layers

被引：0
|
作者：
V. V. Gurzhiy
O. S. Tyumentseva
S. V. Krivovichev
I. G. Tananaev
B. F. Myasoedov
机构：
[1] St. Petersburg State University,Chair of Crystallography
[2] St. Petersburg State University,Chemical Faculty
[3] Russian Academy of Sciences,Frumkin Institute of Physical Chemistry and Electrochemistry
来源：
Radiochemistry | 2012年 / 54卷 / 1期
关键词：
potassium uranyl selenates; uranium; selenates; single crystal X-ray diffraction;
D O I：
10.1134/S1066362212010055
中图分类号：
学科分类号：
摘要：
Single crystals of a new uranyl selenate, K(H5O2)[(UO2)2(SeO4)3(H2O)] (I), were prepared by isothermal evaporation at room temperature. The crystal structure of I was solved by the direct method (space group P21/c; a = 11.456(2), b = 10.231(1), c = 14.809(2) Å; β = 101.901(4)°, V = 1698.4(4) Å3; Z = 4) and refined to R1 = 0.0547 (wR2 = 0.0825) for 3375 reflections with |Fo| ≥ 4σF. The structure of I is based on layers of the composition [(UO2)2(SeO4)3(H2O)]2−. The charge of the inorganic layer is compensated by potassium and oxonium ions located in the interlayer space. Each potassium ion is coordinated by seven oxygen atoms belonging to uranyl selenate layers, including uranyl oxygen atoms, which leads to bending of uranyl selenate structural elements.
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页码：43 / 47
页数：4
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