Thermochemistry of Metal Ligand Bonds

金属配体键的热化学

• 批准号: 9530412
• 负责人: Peter Armentrout
• 金额: $ 55.7万
• 依托单位: University of Utah
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-03-15 至 2000-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9530412&HistoricalAwards=false
• 关键词: Thermochemistry; Metal; Ligand; Bonds

In this project in the Physical Chemistry Program of the Chemistry Division, Armentrout will continue work studying the gas-phase dynamics and chemistry of organometallic ions, especially second- and third-row transition metals, reacting with atomic ions. The main outputs of these investigations are bond energies between the metals and various ligands, such as hydrogen, oxygen, and carbon. An extensive part of the proposed work will examine the effects of sequential ligation on the thermochemistry and reactivity of metal centers. Flowing afterglow ion production and guided ion-beam mass spectrometry will be used to obtain kinetic and thermodynamic data. Better correlations between gas-phase studies and condensed-phase organometallic and catalytic reactions should result from these experiments. By studying reactions involving electrically charged molecules containing transition metal atoms, Armentrout can determine many properties of the corresponding neutral species, such as the strength of bonds between these atoms and attached units called ligands. Such information is useful for understanding many processes, such as condensed-phase and catalytic reactions on surfaces as well as metal interactions with nucleic acids, which are significant in DNA replication, transcription, and messenger RNA translation.

在化学分部的物理化学计划中，ArmentRout将继续研究有机金属离子的气相动力学和化学，尤其是第二排和第三轮过渡金属，与原子离子反应。 这些研究的主要输出是金属和各种配体之间的键能，例如氢，氧和碳。 拟议的工作的很大一部分将研究连接对金属中心热化学和反应性的影响。 流动的余花离子产生和引导离子束质谱法将用于获得动力学数据。 这些实验应导致气相研究与凝结相机和催化反应之间的更好相关性。 通过研究涉及含有电荷分子的转变金属原子的反应，ArmentRout可以确定相应中性物种的许多特性，例如这些原子和称为配体的连接单元之间的键强度。 这些信息对于理解许多过程很有用，例如表面上的凝聚相和催化反应以及与核酸的金属相互作用，这些过程在DNA复制，转录和使者RNA翻译中很重要。