Long-Range Electron Transfer in Binuclear Metal Complexes: Testing the Role of Tunneling Energy

加州理工学院教授哈里·B·格雷和杰伊·R·温克勒的这项研究是由无机化学、生物无机化学和有机金属化学项目资助的。这项研究旨在探索电子隧道(超级交换)在通过蛋白质等材料进行远程电子转移中的作用。这种类型的电子转移对桥与施主和受主之间的能量差非常敏感。联苯桥将被用来连接两个金属离子，通过一组共同的桥联配体的隧道能量的影响将通过改变电子给体和受体金属离子来确定。电子转移反应是最简单的化学转化，因为当电子从给体迁移到接受体时，不会形成或断裂任何键。当氧化还原配对相隔很远的距离时，电子转移的速率由中间介质来调节。这项研究将研究桥中电子态与施主和受主金属离子的电子态之间的能量差异的影响。

This research of Professors Harry B. Gray and Jay R. Winkler of the California Institute of Technology is funded by the Inorganic, Bioinorganic and Organometallic Chemistry Program. The research is aimed at probing the role of electron tunneling (super exchange) in long range electron transfer through materials such as proteins. Electron transfer of this type is extremely sensitive to the difference in energy between the bridge and those of the donor and acceptor. Biphenylene bridges will be used to link two metal ions and the effects of tunneling energy through a common set of bridging ligands will be determined by varying both the electron donor and acceptor metal ions. Electron-transfer reactions are the simplest of chemical transformations in that no bonds are formed or broken as the electron migrates from the donor to the acceptor. When the redox partners are separated by long distances, the rate of electron transfer is mediated by the intervening medium. This research will study the effects of energy differences between electronic states in the bridge and those of the donor and acceptor metal ions.