[H2bipy]2[(UO2)6Zn2(PO3OH)4(PO4)4]·H2O: An Open-Framework Uranyl Zinc Phosphate Templ
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  • 作者：Yaqin Yu ; Wei Zhan ; Thomas E. Albrecht-Schmitt
  • 刊名：Inorganic Chemistry
  • 出版年：2008
  • 出版时间：October 6, 2008
  • 年：2008
  • 卷：47
  • 期：19
  • 页码：9050-9054
  • 全文大小：310K
  • 年卷期：v.47,no.19(October 6, 2008)
  • ISSN：1520-510X
文摘
Under mild hydrothermal conditions, a new organically templated uranyl zinc phosphate, [H2bipy]2[(UO2)6Zn2(PO3OH)4(PO4)4]·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.
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