Novel Reagents, Polymerization Initiators and Superbases--Advances in the Organometallic Chemistry of the Heavy Alkaline Earth Metals

Karin Ruhlandt-Senge，锡拉丘兹大学化学系，由无机、生物无机和有机金属化学项目资助，研究钙、锶和钡的分子化学以及与三价镧系元素相关的研究。以金属为基础的方法，烷基/芳烃消除，脱硅和金属转化将被开发用于sigma键碱土烷基，芳基和硫代酸盐的简易合成。作为这一努力的一部分，新的配体，如terphenyls，将被用来支持含有II族金属的新型有机金属化合物。含有有机碱土或镧系阳离子的化合物将被制备并作为活性阴离子或开环聚合的引发剂进行评价。对这些碱土化合物的键合和反应性的基础研究将增加对这些相对未开发的金属的有机金属化学的了解。此外，参与这项工作的本科生和研究生将通过研究这些活性物质来学习合成、表征和催化方面的宝贵技能。

Karin Ruhlandt-Senge, Department of Chemistry, Syracuse University, is supported by the Inorganic, Bioinorganic and Organometallic Chemistry Program for research into the molecular chemistry of calcium, strontium and barium and related studies with the trivalent lanthanides. Metal-based methods, alkyl/arene elimination, desilylation, and transmetallations will be developed for the facile synthesis of sigma-bonded alkaline earth alkyls, aryls and thiolates. As a part of this effort, new ligands, such as terphenyls, will be utilized to support novel organometallic compounds containing group II metals. Compounds containing an organo alkaline earth or lanthanide cations will be prepared and evaluated as initiators in living anionic or ring opening polymerization.Fundamental studies of bonding and reactivity of these alkaline earth compounds will lead to an increased understanding of the organometallic chemistry of these relatively unexplored metals. In addition, undergraduate and graduate students involved in the work will learn valuable skills in synthesis, characterization and catalysis by studying these reactive species.