Synthetic and Structural Chemistry of Polylithium Organic Compounds

德克萨斯大学奥斯汀分校化学系的Richard J.Lagow博士得到了无机、生物无机和有机金属计划的支持，继续研究多锂有机化合物的合成、结构和成键。在这些物种中，两个或更多的锂原子连接到相同的、相邻的或几乎相邻的碳原子上。将尝试制备的两种新化合物是四硫代乙烯和过硫代金刚烷。热重排合成将继续用于取代二锂硫代甲烷，锂-卤素交换技术也将被探索。将尝试形成包含锂作为取代基的硅、锗和氧化合物。已经提出了四中心两电子成键来使迄今观察到的结构合理化，因此将尝试将该模型应用于新的化合物。将使用稀有气体基质分离、质谱学和结晶学技术对产品进行表征。%建议用于合成和表征的多锂化合物是不寻常的高活性分子。它们可能会被用作新材料或新型固体或液体电池，但它们的直接用途可能是扩大可用于合成其他有机和有机金属化合物的方法。

Dr. Richard J. Lagow of the Chemistry Department at the University of Texas at Austin is supported by the Inorganic, Bioinorganic, and Organometallic Program for continued research on the synthesis, structure, and bonding of polylithium organic compounds. In these species, two or more lithium atoms are attached to the same, adjacent, or nearly adjacent carbon atoms. Two of the novel compounds that will be attempted to be prepared are tetralithioethylene and perlithioadamantane. Thermal rearrangement synthesis will continue to be used for substituted dilithiomethanes and lithium-halogen exchange techniques will also be explored. Formation of silicon, germanium, and oxygen compunds containing lithium as a substituent will be attempted. Four-center, two-electron bonding has been proposed to rationalize the structures thus far observed so attempts will be made to apply that model in new compounds. Noble gas matrix isolation, mass spectrometry, and crystallographic techniques will be used to characterize the products. %%% The polylithium compounds proposed for synthesis and characterization are unusual and highly reactive molecules. They may find utility as new materials or in new types of solid or liquid batteries, but their immediate usefulness will likely be in expanding methods available for synthesis of other organic and organometallic compounds.