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

这个无机、生物无机和有机金属项目的奖项为亚利桑那大学化学系的Dennis L. Lichtenberger博士对金属-金属键合性质的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。所研究的金属-金属键的强度范围从四键和三键到只有弱结合的键。最常用的金属是铬、钼、钨、铑、钌和铁。配体也会变化，在某些情况下，金属会被桥接。此外，还计划研究一些末端金属-氧、金属-氮和金属-炔体系，在这些体系中，金属和杂原子之间会发生多重键合。Lichtenberger还将继续改进他实验室的高精度x射线核心光电子能谱仪器，用于研究气相和凝聚态，包括金属材料的薄膜。金属-金属键的结构、稳定性和反应性影响着许多化学、催化和材料过程。亚利桑那大学的Dennis L. Lichtenberger博士通过研究各种各样的多金属系统和编目有关其电子行为的基本信息的方法，将有助于对化学和电子工业中重要的系统的理论和实践理解。

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.