The Preparation, Structure, Dynamics, and Reactivity of Thermally Stable Group IV Early-Transition Metal Allyl Complexes

Michael E.化学系的银，霍普 学院，正在支持无机，生物无机，和 关于综合和 前过渡金属烯丙基化合物的表征。 具体地，含有部分Cp（烯丙基）M的化合物，其中 M=Zr或Hf。 烯丙基配体将是 甲基化以提高产物的稳定性。 化合物 然后将制备的用于合成早-晚过渡 金属硫化物 在一次尝试中， 由烯丙基物质制备的试剂将与 后过渡金属羰基化物。 在另一种晚期金属中 将使用。 烯丙基物质也将用于 研究烯丙基的流动性。 %%% 研究的目的是提高催化剂的反应活性 的早期过渡金属中心，通过将其与一个 后过渡金属 虽然这一战略没有 成功的，积极的结果将产生影响 用于开发有用的工业催化剂。 是 预计该项目将导致综合 新的有机金属物种和工作将是 对本科生有很大的教育价值 谁将参与该计划。

Dr. Michael E. Silver of the Chemistry Department, Hope College, is being supported by the Inorganic, Bioinorganic, and Organometallic Program for work on the synthesis and characterization of early transition metal allyl compounds. Specifically, compounds containing the moiety Cp(allyl)M, where M=Zr or Hf, will be synthesized. The allyl ligand will be methylated to improve stability of the product. The compounds prepared will then be used to synthesize early-late transition metal bimetallic compounds. In one attempt, the Grignard reagent prepared from the allyl species will be reacted with late transition metal carbonylates. In another, late metal hydrides will be used. The allyl species will also be used to study fluxionality of the allyl group. %%% The goal of the research is to enhance the catalytic reactivity of the early transition metal center by associating it with a late-transition metal. Although this strategy has not successed previously, positive results would have implications for the development of useful industrial catalysts. It is anticipated that the project will result in the synthesis of novel organometallic species and the work will be of considerable educational value to the undergraduate students who will participate in the program.