Metal-Rich Metallaboranes. Synthesis, Structure and Reactivity

最近合成的含有过渡金属(如铁或钴)和所谓的“主族”元素(如硼或砷)的新化合物，提供了挑战理论家的新型化学键的例子。这些新化合物作为具有理想性能的固态材料的前驱体也显示出巨大的应用前景。例如，在首席调查员的实验室中合成的一种化合物是制备金属玻璃薄膜的合理前体。建议：a.制备和表征富金属的硼烷体系(包括硼化物)，并研究其性质和反应活性；发展对金属取代的硼烷的基本了解，特别是过渡金属对BH键的反应性的影响；设计和执行已知的有机金属化合物的选定的硼烷模拟物的合成；D.继续开发作为双重试剂的硼烷和其他主族氢化物的Lewis碱加合物的用途，即，“激活”过渡金属化合物并“插入”硼烷的试剂。

The recent synthesis of new compounds containing transition metals, such as iron or cobalt, and so-called "main group" elements, such as boron or arsenic, has provided examples of new types of chemical bonding to challenge the theorist. These new compounds also show great promise for practical application as precursors of solid state materials with desirable properties. For example, one of the compounds synthesized in the Principal Investigator's laboratory is a logical precursor for the preparation of metallic glass films. It is proposed to: a. prepare and charactierize metal-rich borane systems (including borides) and investigate their properties and reactivities; b. develop a fundamental understanding of metal-substituted borane, particularly the effect of the transition metal on the reactivity of a BH bond; c. design and execute the synthesis of selected borane mimics of known organometallic compounds; d. continue to develop the use of Lewis base adducts of borane and other main group hydrides as dual reagents, i.e., reagents that "activate" a transition metal compound and "insert" borane.