Electrochemical, Spectroelectrochemical, and Photoluminescence Studies of Transition Metal Halide Clusters in Room Temperature Haloaluminate Ionic Liquids

该项目属于分析和表面化学的一般领域，以及非水电化学的子领域。本实验活动的主要目的是在室温卤铝酸盐熔体中电合成和表征过渡金属卤化物团簇。利用电化学、光谱电化学和电致发光技术，赫西教授将研究Re、Mo、W、Nb和Ta在不同氧化状态下的溴和氯络合物簇合物的氧化还原和光谱性质，他还将探索这些物种稳定的熔融酸度范围。这些过渡金属簇合物的物理化学行为的基础知识对于理解这些具有催化作用的重要实体的结构、成键和反应动力学是至关重要的。这些导致这一新知识的研究在很大程度上是由于这位研究员在他之前的国家科学基金会拨款CHE-8412730任职期间在开发复杂的实验方案来处理这些极具挑战性的系统方面取得的进展。熔盐化学中新实验方法的不断发展也是这项研究预期的另一个好处。

This project is in the general area of analytical and surface chemistry and in the subfield of nonaqueous electrochemistry. The primary thrust of this experimental activity focuses on the electrosynthesis and characterization of transition metal halide clusters in room temperature haloaluminate melts. Using electrochemical, spectroelectrochemical, and electroluminescent techniques, Professor Hussey will study the redox and spectral properties of bromo- and chloro- complex clusters of rhenium, molybdenum, tungsten, niobium, and tantalum in various oxidation states and he will also explore the range of melt acidities over which these species are stable. Such fundamental knowledge of the physicochemical behavior of these transition metal cluster complexes is essential to an understanding of the structure, bonding, and reaction kinetics of these catalytically important entities. These studies leading to this new knowledge have been enabled in large measure by the advances that this investigator has made during the tenure of his previous NSF grant, CHE- 8412730, in developing sophisticated experimental protocols for handling these extremely challenging systems. The continued development of new experimental methods in molten salt chemistry is an added benefit that is also anticipated from this research.