Metal- and Nonmetal Boron Clusters: Synthetic, Chemical and Mechanistic Studies

硼-氢化合物及其金属加合物 （金属硼烷）或碳（碳硼烷）表现出不寻常的类型 这些化学键对于 理论化学家这些化合物也在不断增长 作为新固态材料的前体的重要性。这 该项目是一个持续的调查机制， 硼化合物的结构转变。化学 所获得的知识将指导新的合成 金属硼烷的制备方法及其新的应用 其他化学领域的分子。 模型硼烷的反应和重排机理 和杂原子硼烷簇将使用 立体定向硼同位素标记作为主要诊断 探针例子包括重排研究 闭碳硼烷和巢式和蛛网式己硼烷，机械的 硼烷的多烷基化研究， 硼还原过程中形成的长寿命中间体， 卤键由三烷基锡形成。第V族杂原子- 将制备硼烷簇， 建立了光谱和结构特征。的范围 几类金属硼烷的反应性，包括一些 含Zn和Mn的量将被测定。高分子的合成 硼含量的聚合物将被开发用于可能的 在能量存储和固态材料中的应用。

Boron-hydrogen compounds and adducts of these containing metals (metalloboranes) or carbon (carboranes) exhibit unusual types of chemical bonds which are of considerable interest to theoretical chemists. These compounds are also of growing importance as precursors to new solid state materials. This project is a continuing investigation of the mechanisms of structural transformations of boron compounds. The chemical knowledge gained will guide the development of new synthetic routes to metalloboranes and new applications of these molecules in other areas of chemistry. The mechanisms of reactions and rearrangements of model borane and heteroatom borane clusters will be determined using stereospecific boron isotopic labeling as a primary diagnostic probe. Examples include rearrangement studies of closo-carboranes and nido- and arachno-hexaboranes, mechanistic studies of polyalkylation of boranes, and characterization of long lived intermediates formed during the reduction of boron- halogen bonds by trialkyltin hydrides. Group V heteroatom- borane clusters will be prepared and their chemical, spectroscopic and structural features established. The scope of reactivity of several classes of metalloboranes including some containing Zn and Mn will be determined. The syntheses of high boron content polymers will be developed for possible applications in energy storage and solid state materials.