New Synthetic Approaches in Boron Chemistry

本课题属于无机、生物无机和有机金属化学专业，属于主族化学的一般领域，属于氢化硼化学的特定领域。硼氢化合物作为合成新材料或改进合成已知材料（如金属硼化物）的起始材料具有相当大的实际意义。该项目的目标是开发新的合成策略，以促进氢化硼化学的高产率选择性转化。特别令人感兴趣的是利用过渡金属催化多面体硼烷和碳硼烷的转化。研究了钌羰基化合物催化炔插入多面体碳硼烷的方法。金属催化的炔和烯烃加成反应和偶联反应将用于合成烯基硼烷和烷基硼烷。将研究晚期过渡元素作为碳硼烷笼异构化的催化剂。过渡金属，特别是Pt(II)，也将作为硼烷的脱氢偶联、缩合、环化和笼状生长反应的催化剂进行研究。在第二个主要子项目中，将研究杂化多面体硼烷的合成及其化学和结构性质，例如次二硫代硼烷簇。

This project in the Inorganic, Bioinorganic and Organometallic Chemistry Program is in the general area of main-group chemistry and in the specific area of boron hydride chemistry. Boron-hydrogen compounds are of considerable practical interest as starting materials for the synthesis of new materials or for improved syntheses of known materials, such as metal borides. The goal of this project is to develop new synthetic strategies to facilitate high yield selective transformations in boron hydride chemistry. Of especial interest is the use of transition metals to catalyze transformations of polyhedral boranes and carboranes. The use of ruthenium carbonyl compounds to catalyze the insertion of alkynes into polyhedral carboranes will be investigated. Metal-catalyzed alkyne and olefin addition and coupling reactions will be used for the synthesis of alkenyl- and alkyl-boranes. Late transition elements will be investigated as catalysts for isomerizations of carborane cages. Transition metals, particularly Pt(II), will be investigated also as catalysts for dehydro-coupling, -condensation, -cyclization and -cage growth reactions of boranes. In a second major sub-project the syntheses and chemical and structural properties of hybrid polyhedral boranes, such as hypho-dithiaborane clusters, will be investigated.