Electrochemical Reactions Involving Large Structural Change

本研究在私立本科院校（PUI） 项目是在分析和表面的一般领域 化学和生物电化学的子领域。 目标 这项创新计划的目的是表征电化学 经历大范围变化的过渡金属配合物的行为 电子转移过程中分子结构的变化。 这项研究的实验结果将用于测试 电子转移反应的最新理论， 与结构相关的不寻常的氧化还原行为的例子 变化 电极反应的速率和机制将是 研究使用动态伏安技术，低 温度电化学和微电极。 x射线 吸收精细结构（EXAFS）光谱电化学将是 用于测定金属-配体键距的变化， 由于电子转移而发生。 化合物被 研究包括氧代钼（VI）配合物，轴向 取代的铁卟啉和钴大环，金属-金属 钼和钨的键合二聚体，以及铁-钼 从固氮酶中提取的辅因子。 的结果予以 调查应大大有助于我们 对金属酶催化电子转移的理解 反应，并与生物技术和体内 流程.

This Research in Primarily Undergraduate Institutions (PUI) project is in the general area of analytical and surface chemistry and in the subfield of bioelectrochemistry. The goal of this innovative program is to characterize the electrochemical behavior of transition metal complexes that experience a large change in molecular structure during electron transfer. Experimental results from this research will be used to test current theories of electron transfer reactions and to understand examples of unusual redox behavior associated with structural change. Rates and mechanisms of electrode reactions will be investigated using dynamic voltammetric techniques, low temperature electrochemistry, and microelectrodes. X-ray absorption fine structure (EXAFS) spectroelectrochemistry will be used to determine changes in metal-ligand bond distances that occur as a result of electron transfer. Compounds to be investigated include oxomolybdenum (VI) complexes, axially substituted iron porphyrins and cobalt macrocycles, metal-metal bonded dimers of molybdenum and tungsten, and the iron-molybdenum cofactor extracted from nitrogenase enzyme. The results of these investigations should contribute significantly to our understanding of metalloenzyme-catalyzed electron transfer reactions and have relevance to both biotechnological and in vivo processes.