Synthesis and Properties of Ternary Metal Pnictides and Pnictide Oxides

小行星9505565 本论文主要研究了过渡金属磷属元素化物及其氧化物的合成与表征。将努力集中在重的主族磷族元素如砷、锑和铋、第一行过渡金属以及碱金属、碱土金属和稀土金属的组合上。Zintl概念将用于指导新化合物的合成。本研究的目的之一是合成新的A+ +（MX）-型三元化合物，其中M是过渡金属，A是碱金属或碱土金属，X是半金属或主族元素。这些新化合物可以被认为是Zintl化合物，如果d电子位于金属上并且成键描述保持不变。这种合成新化合物的策略对于固态化学是独特的，并且是定向合成努力。此外，过渡金属磷属元素化物氧化物将被合成和表征。与大多数含有氮族元素和氧原子的化合物不同，在这些化合物中，两者之间没有键合相互作用。 它们是层状材料，人们可能会期望找到与这种结构类型结晶的化合物相关的独特性质。新化合物将通过粉末和单晶X射线和/op中子衍射、电阻率与温度、磁化强度与场和温度、热重分析、差热分析、epr、IR和UV-vis光谱来表征。 该项目将导致新化合物的合成，这些化合物可能表现出新的磁性和电子特性，并将扩展有关Zintl化合物和金属间化合物之间界面材料的结构，特性和键合的知识。此外，还将研究结构与性能的关系。对三元过渡金属磷属元素化物的研究将为开发具有新性质的固体提供新的思路。 磷属化合物氧化物是一小类化合物，迄今尚未得到很好的表征。

9505565 Kauzlarich This research is concerned with the synthesis and characterization of transition metal pnictide and pnictide oxide compounds. Efforts will be focused on the combination of the heavy main group pnictogens such as arsenic, antimony and bismuth, the first row transition metals, and the alkali, alkaline earth, and rare earth metals. The Zintl concept will be used to direct the synthesis of new compounds. One objective of this research is to synthesize new ternary compounds of the type A+ + (MX)- , where M is a transition metal, A = alkali or alkaline earth metal, and X = semimetal or main group element. These new compounds can be considered Zintl compounds if the d electrons are localized on the metal and the bonding description remains the same. This strategy for the synthesis of new compounds is unique to solid-state chemistry and is a directed synthetic effort. In addition, transition metal pnictide oxides will be synthesized and characterized. Unlike most compounds containing a pnictogen and oxygen atom, there is no bonding interactions between the two in these compounds. They are layered materials and one might expect to find unique properties associated with compounds that crystallize in this structure type. New compounds will be characterized by powder and single crystal x-ray and/op neutron diffraction, resistivity versus temperature, magnetization versus field and versus temperature, thermogravimetric analysis, differential thermal analysis, epr, IR and UV-vis spectroscopy. %%% This project will result in the synthesis of new compounds that may exhibit novel magnetic and electronic properties and will expand the knowledge concerning structure, properties, and bonding of materials at the interface between Zintl compounds and intermetallics. In addition, structure-property relationships will be studied. Research on ternary transition metal pnictides will provide new insight on the development of solids with novel properties. Pnictide Oxides are a small class of compounds that have not been well characterized to date.