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首页> 外文学位 >Investigation into the fundamental solid-state chemistry of actinide elements: Synthesis and characterization of ternary and quaternary actinide chalcogenide compounds.
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Investigation into the fundamental solid-state chemistry of actinide elements: Synthesis and characterization of ternary and quaternary actinide chalcogenide compounds.

机译：act系元素基本固态化学研究：三级和四级act系硫属元素化合物的合成与表征。

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摘要

The use of molten alkali metal polysulfide fluxes has had a profound impact on the synthesis of complex multinary chalcogenide compounds. This method has been used to synthesize numerous quaternary transition metal and rare-earth chalcophosphate compounds. Relatively little information is known about the solid-state chemistry of actinide elements in a chalcogen environment. The synthesis and characterization of the first quaternary thorium, uranium, and plutonium thiophosphate compounds will be discussed. Three uranium, five thorium, and five plutonium thiophosphate compounds have been characterized by single crystal X-ray diffraction, Raman spectroscopy, and diffuse reflectance UV-visible-NIR spectroscopy. These compounds exhibit structures ranging from three-dimensional extended networks found in Cs8U5(P 3S10)2(PS4)6 to one-dimensional chains found in K3Pu(PS4)2. A ternary plutonium selenide, KPu3Se8, has also been characterized using X-ray diffraction and X-ray absorption spectroscopy. The coordination environments of the actinide metals in these compounds are examined. Preferences in coordination geometry and metal oxidation state are discussed, and a consistent series of metal-chalcogen distances is developed.
机译：熔融碱金属多硫化物助熔剂的使用对复杂的多元硫族化物化合物的合成产生了深远的影响。该方法已用于合成许多季过渡金属和稀土硫代磷酸酯化合物。关于硫族元素环境中act系元素的固态化学信息知之甚少。将讨论第一季or，铀和p硫代磷酸盐化合物的合成和表征。三种铀，五种or和五种硫代磷酸p化合物已通过单晶X射线衍射，拉曼光谱和漫反射紫外-可见-近红外光谱表征。这些化合物具有在Cs 8 U 5 （P 3 S 10 ） 2 （PS 4 ） 6 到在K 3 Pu（PS 4 ） 2 。还使用X射线衍射和X射线吸收光谱对硒化三元K KPu 3 Se 8 进行了表征。检查了这些化合物中act系金属的配位环境。讨论了配位几何和金属氧化态的偏爱，并开发了一系列一致的金属-硫属元素距离。

著录项

  • 作者

    Hess, Ryan Falcone.;

  • 作者单位

    Colorado State University.;

  • 授予单位 Colorado State University.;
  • 学科 Chemistry Inorganic.; Chemistry Nuclear.
  • 学位 Ph.D.
  • 年度 2002
  • 页码 p.2380
  • 总页数 436
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 无机化学;
  • 关键词

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