Isopropylammonium Layered Uranyl Chromates: Syntheses and Crystal Structures of [(CH3)2CHNH3]3[(UO2)3(CrO4)2O(OH)3] and[(CH3)2CHNH3]2[(UO2)2(CrO4)3(H2O)]

被引：24
|
作者：
Siidra, Oleg I. [1 ]
Nazarchuk, Evgeny V. [1 ]
Krivovichev, Sergey V. [1 ]
机构：
[1] St Petersburg State Univ, Dept Crystallog, St Petersburg, Russia
来源：
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 2012年 / 638卷 / 06期
关键词：
Uranyl chromates; Isomerism; Amine templated structures; Trinuclear complexes; Crystal structures; Crystal engineering; URANIUM; SULFATE; SHEETS; COORDINATION; MOLYBDATES; PHOSPHATES; CHEMISTRY; SELENATES; TOPOLOGY; SPACE;
D O I：
10.1002/zaac.201100558
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Two novel isopropylamine-templated uranyl chromates, [(CH3)2CHNH3]3[(UO2)3(CrO4)2O(OH)3] (1) and [(CH3)2CHNH3]2[(UO2)2(CrO4)3(H2O)] (2) were prepared by hydrothermal method at 100 degrees C. The compounds were characterized by electron microprobe analysis and X-ray diffraction crystal structure analysis [1: trigonal, P31m, a = 9.646(4), c = 8.469(4) angstrom, V = 682.4(5) angstrom 3; 2: monoclinic, P21/c, a = 11.309(3), b = 11.465(3), c = 17.055(5) angstrom, beta = 99.150(6)degrees, V = 2183.2(11) angstrom 3]. The structure of 1 is based upon trimers of uranyl bipyramids interlinked by CrO4 tetrahedra to form [(UO2)3(CrO4)2O(OH)3]3 layers, whereas, in the structure of 2, UO7 and UO6(H2O) pentagonal bipyramids are linked through CrO4 tetrahedra into the [(UO2)2(CrO4)3(H2O)]2 layers. The structures show many similarities to related uranyl selenate compounds, thus providing additional data on similarities and differences between uranyl sulfates, chromates, selenates, and molybdates.
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页码：976 / 981
页数：6
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