Synthesis, Reactivity and Catalysis of Novel Metallacarboranes

该奖项在无机，生物无机和有机化学 计划是给M博士的。化学家霍桑 加州大学洛杉矶分校。 的 研究将主要集中在合成，结构 表征和金属碳硼烷的反应性， 主族和镧系元素。 将纳入研究 引入Mg、Sc、Y、La、Ce、Nd、Gd， Lu、Th和U。 预计这些化合物将表现出不寻常的 结构和高反应性。 难溶性维生素合成 和表征镧碳硼烷将被克服， 将镧系元素络合到卟啉或大环上。 烷基， 镧碳硼烷的氢化物和多氢化物络合物 也将被合成。 新型碳硼烷夹心配合物 In、Ge、Sn、Pb、P、As和Sb将被制备， Si，Ge，Sn，P， 和As。 最后，碳硼烷阴离子将用作催化剂的载体。 二烷基铝阳离子。 %%% 合成了新的碳硼烷和金属碳硼烷物种， 有望表现出新型的键合和反应性。 不 结果只会增加对 主族和簇合物，但材料可用于 这种类型的其它配合物的合成将 开发 当这些化合物的潜力 开发电子或聚合物材料的实用性， 考虑了 此外，氢化物物质可以是有效的 用于C-H键活化的催化剂。

This award in the Inorganic, Bioinorganic, and Organometallic Program is made to Dr. M. Frederick Hawthorne of the Chemistry Department, University of California at Los Angeles. The research will focus primarily on the synthesis, structural characterization, and reactivity of metallacarboranes of main-group and lanthanide elements. Included will be studies of metallacarboranes incorporating Mg, Sc, Y, La, Ce, Nd, Gd, Lu, Th, and U. These compounds are expected to exhibit unusual structures and high reactivity. Difficulities in synthesizing and characterizing lanthanacarboranes will be overcome by complexing the lanthanide to porphyrins or macrocycles. Alkyl, hydride, and polyhydride complexes of the lanthanacarboranes will also be synthesized. New carborane sandwich complexes of In, Ge, Sn, Pb, P, As, and Sb will be prepared as will low-valent sigma-bonded carborane complexes of Si, Ge, Sn, P, and As. Finally, carborane anions will be used as supports for dialkylaluminum cations. %%% The new carborane and metallacarborane species synthesized are expected to exhibit new types of bonding and reactivity. Not only will the results increase fundamental understanding of main group and cluster compounds, but materials useful for the synthesis of additional complexes of this type will be developed. Such compounds gain importance when their potential utility for development of electronic or polymeric materials is considered. In addition, the hydride species may be effective catalysts for C-H bond activation.