Grant for Exploratory Research: High-Pressure Photoacoustic Calorimetry

这项探索性研究的小额赠款是由 无机，生物无机和有机化学课程 支持高压的开发和应用 光声量热法 西奥多·J·伯基博士 孟菲斯州立大学化学系将建造 一种进行有机金属反应的电池 化合物和测量体积的变化，由于差异 反应物、中间体或产物的体积。 的 方法将有助于确定详细的反应 光引发反应的机制，包括取代 烷烃和其他小分子的反应和活化。 该项目被认为是有风险的，因为该方法可能不会 足够敏感。 如果成功的话，这种方法可能是 用于研究有机金属反应，其机制 没有被广泛研究，为了比较 结果与其他几种方法用于确定体积 激活。 %%% 在反应过程中，反应物和溶剂 分子重新排列到所需的最佳方向 反应。 由于这种重新安排， 反应物在反应过程中发生变化。 的 产物的体积也不同于反应物的体积。 因此，反应期间体积变化的测量提供了 关于能量和空间要求的信息， 反应 在这个奖项的支持下，西奥多J。 伯基将尝试开发一种新的测量方法 量的变化，并将获得一些信息， 重要的有机金属反应，包括一些催化 和一些光诱导过程。

This Small Grant for Exploratory Research is made by the Inorganic, Bioinorganic, and Organometallic Chemistry Program to support the development and application of high pressure photoacoustic calorimetry. Dr. Theodore J. Burkey of the Chemistry Department, Memphis State University, will construct a cell in which to carry out reactions of organometallic compounds and measure the change in volume due to differences in the volumes of reactants and intermediates or products. The method will be useful in determining detailed reaction mechanisms for photointiated reactions, including substitution reactions and activation of alkanes and other small molecules. The project is viewed as risky since the method may not be sufficiently sensitive. If successful, the method could be useful for studying organometallic reactions, whose mechanisms have not been extensively studied, and for comparison of results with the few other methods used for determining volumes of activation. %%% During the course of reactions, both reactant and solvent molecules rearrange themselves to optimal orientations required for reaction. As a result of this rearrangement, the volume of the reactants changes during the course of the reaction. The volume of the products also differs from that of the reactants. Thus, measurement of volume change during reaction provides information about the energy and steric requirements for reaction. With the support of this award, Dr. Theodore J. Burkey will attempt to develop a new method for measuring volume changes and will gain information on a number of important organometallic reactions, including some catalytic and some light induced processes.