Presidential Young Investigator Award/Metal-Ligand Multiple Bonds and Atom Transfer Processes

爱荷华州立大学的L.Keith Woo博士作为总统青年研究员得到了无机化学、生物无机化学和有机金属化学项目的支持。吴博士的项目涉及过渡金属化合物的不同寻常的反应，比如铁和钼，在这种反应中，两个甚至三个电子同时转移。人们对这种过程知之甚少，并提出了新的实验和理论挑战。已知的此类反应的例子包括与血红蛋白中的铁结合中心有关的卟啉金属络合物。将研究金属卟啉之间的多电子氧化还原反应以及伴随的氮或氧原子转移。该项目的具体目标包括描述氮和氧原子转移的范围和一般性，确定这些过程的热力学和动力学参数如何随着分子(结构、电子)变化而变化，并阐明这些过程与其他多电子过程的关系，如固氮和氧活化。

Dr. L. Keith Woo of the Iowa State University is supported as a Presidential Young Investigator by the Inorganic, Bioinorganic and Organometallic Chemistry Program. Dr. Woo's project is concerned with unusual reactions of compounds of transition metals, such as iron and molybdenum, in which two or even three electrons are transferred simultaneously. Such processes are poorly understood and present new experimental and theoretical challenges. The known examples of such reactions involve metal complexes of porphyrins, which are related to the iron-binding center in hemoglobin. Multi-electron redox reactions, and the accompanying nitrogen or oxygen atom transfers, between metalloporphyrins will be investigated. The specific goals of the project include delineating the scope and generality of nitrogen and oxygen atom transfer, determining how thermodynamic and kinetic parameters of these processes vary as a function of molecular (structural, electronic) changes, and elucidating the relationship of these processes to other multi-electron processes such as nitrogen fixation and oxygen activation.