[H2bipy]2[(UO2)6Zn2(PO3OH)4(PO4)4]•H2O:: An open-framework uranyl zinc phosphate templated by diprotonated 4,4′-bipyridyl

被引：15
|
作者：
Yu, Yaqin
Zhan, Wei
Albrecht-Schmitt, Thomas E. [1 ]
机构：
[1] Auburn Univ, Dept Chem & Biochem, Auburn, AL 36849 USA
来源：
INORGANIC CHEMISTRY | 2008年 / 47卷 / 19期
关键词：
D O I：
10.1021/ic801125w
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Under mild hydrothermal conditions, a new organically templated uranyl zinc phosphate, [H(2)bipy](2)[(UO2)(6)-Zn-2(PO3OH)(4)(PO4)(4)]center dot H2O (UZnP-2), has been synthesized. Structural analysis reveals that UZnP-2 is constructed from UO7 pentagonal bipyramids that are linked into edge-sharing dimers that are in turn joined together by ZnO4 and PO4 tetrahedra to form a three-dimensional network. Intersecting channels occur along the a, b, and c axes. These channels house the diprotonated 4,4'-bipyridyl cations and water molecules. Ion-exchange experiments demonstrate that replacement of the 4,4'-bipyridyl cations by alkali and alkaline-earth metal cations results in a rearrangement of the framework. Further characterization of UZnP-2 is provided by Raman and fluorescence spectroscopy. The latter method reveals strong emission from the uranyl moieties with characteristic fine structure.
引用
收藏
页码：9050 / 9054
页数：5
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