Ionization-Structure-Reactivity Relationships in Transition Metal Chemistry: Metal-Metal Complexes

亚利桑那大学化学系的Dennis L.Lichtenberger博士在无机、生物无机和有机金属项目中的这一奖项为金属-金属键的性质研究提供了持续的支持。利用光电子能谱，Lichtenberger能够表征受化学环境变化影响的金属-金属相互作用的电子结构。研究中的金属-金属键的强度范围从四重键和三重键到只有弱缔合的键。最常用的金属是铬、钼、钨、铑、钚和铁。配体也会有所不同，在某些情况下，金属会被桥联。还计划研究一些末端金属-氧、金属-氮和金属-炔系统，在这些系统中，金属和杂原子之间发生多重成键。Lichtenberger还将继续改进其实验室中的高精度X射线核心光电子能谱仪器，用于研究气相和凝聚物种，包括金属材料薄膜。金属-金属键的结构、稳定性和反应活性影响着许多化学、催化和材料过程。亚利桑那大学的Dennis L.Lichtenberger博士开发了研究各种多金属系统的方法，并对其电子行为的基本信息进行了分类，他将有助于从理论和实践上理解在化学和电子行业中非常重要的系统。

This award in the Inorganic, Bioinorganic, and Organometallic Program provides continued support for research on the nature of metal-metal bonding by Dr. Dennis L. Lichtenberger of the Chemistry Department, University of Arizona. Using photoelectron spectroscopy, Lichtenberger is able to characterize the electronic structure of metal-metal interactions as affected by changes in chemical environment. The strength of the metal-metal bonds under investigation ranges from quadruple and triple bonds to those with only weak associations. The metals used most commonly are chromium, molybdenum, tungsten, rhodium, ruthenium, and iron. Ligands will also vary, and in some cases the metals will be bridged. Plans are also in place to study some terminal metal-oxo, metal-nitrido, and metal-alkyne systems, in which multiple bonding between a metal and a heteroatom occurs. Lichtenberger will also continue to improve the high precision X-ray core photoelectron spectroscopy instrumentation in his laboratory for study of both gas phase and condensed species, including thin films of metallic materials. %%% The structure, stability and reactivity of metal-metal bonds influences many chemical, catalytic, and materials processes. By developing methods to study a wide variety of multi-metal systems and cataloging fundamental information about their electronic behavior, Dr. Dennis L. Lichtenberger of the University of Arizona will contribute to both the theoretical and practical understanding of systems that are important in the chemical and electronic industries.