Chemistry of New Zintl Phases in Supercritical Fluids

该奖项在无机，生物无机和有机化学 该计划支持约瑟夫·W博士的研究。科利斯，化学系， 克莱姆森大学，用于研究新的合成方法， 过渡金属主族固体。 相对较低的反应 超临界流体的温度允许动力学分离 不容易获得的稳定相。 将军的固体 式AxMyEz，其中A=碱金属，M=Cu，Ag，E=S，Se，将是 在超临界氨或乙二胺中制备。 尝试也将 使用铋和碲。 所得化合物 预期具有低维结构， 电子特性 综合的一个主要战略是 用二价阳离子取代一价碱金属，或 具有开壳过渡金属的单价钴金属， 锰（II）或铁（II）。 此外，新技术将 开发了一些不寻常的水溶剂。 热液卤水， 将使用更高浓度的卤化物、硫化物或碳酸盐， 在类似于那些条件下合成新的金属硫属化物 天然宝石和矿物质在其下形成。 固态化合物在电子器件中是有用的，因此固态化合物的开发是必要的。 新材料和制备材料的新方法是研究的重要领域。 research. 在该奖项的支持下开发的新方法 不仅是新颖的并且可以产生有用的新固体，而且可以具有 对理解自然界中矿物形成的影响

This award in the Inorganic, Bioinorganic, and Organometallic Chemistry Program supports research by Dr. Joseph W. Kolis, Chemistry Department, Clemson University, for the study of novel synthetic methods for transition metal-main group solids. The relatively low reaction temperature of supercritical fluids permits isolation of kinetically stabilized phases not otherwise easily obtainable. Solids of the general formula AxMyEz, where A=alkali metal, M=Cu, Ag, and E=S, Se, will be prepared in supercritical ammonia or ethylenediamine. Attempts will also be made to use bismuth and tellurium. The resulting compounds are expected to have low dimensional structures and potentially interesting electronic properties. A dominant strategy for the synthesis will be to replace monovalent alkali metals with divalent cations, or replacement of monovalent coinage metals with open shell transition metals such as manganese (II) or iron (II). In addition, new techniques will be developed for some unusual aqueous solvents. Hydrothermal brines with high concentrations of halides, sulfides or carbonates will be used to synthesize new metal chalcogenides under conditions similar to those under which naturally occurring gems and minerals form. Solid state compounds are useful in electronic devices, so development of new materials and new methods to prepare materials are important areas of research. The new methods to be developed with the support of this award not only are novel and may result in useful new solids, but may have implications for understanding formation of minerals in nature as well