Main Group Rings, Clusters, and Assemblies

Alan Cowley博士，德克萨斯大学奥斯汀分校化学系，由化学部无机、生物无机和有机金属项目资助，研究主基团环、簇和组装。将制备几种具有13族元素的新的不饱和环体系，其中一些可能作为开环复分解聚合（ROMP）的候选体系。将研究异丙二烯作为诸如金属间材料的热源或光化学源的潜力。将13族- 13族键结合到堆叠结构中的双环系统的组装将因其潜在的有趣的电学和/或磁性而进行研究。各种阴离子识别的方法，包括包含13族或14族元素的多齿刘易斯酸组装，也将被追求，以及形成较重的13族元素的簇和笼型化合物的新方法将被开发。主要族元素（硼、铝、镓和铟）与碳环系统以及彼此之间的新组合将被制备和研究。除了对这些环的结构和键描述的内在兴趣外，这些化合物有潜力作为具有新型电学和/或磁性质的新型聚合物和金属间材料的前体。较大的环体系适合阴离子的选择性和可逆结合，因此在阴离子传输和均相催化方面具有潜在的应用

Dr. Alan Cowley, Department of Chemistry, University of Texas at Austin, is supported by the Inorganic, Bioinorganic, and Organometallic Program of the Chemistry Division for studies of main group rings, clusters, and assemblies. Several new unsaturated ring systems featuring the group 13 elements will be prepared, some with potential as candidates for ring opening metathesis polymerization (ROMP). Heteronorbornadienes will be investigated for their potential as thermal or photochemical sources of, for example, intermetallic materials. Assembly of bicyclic ring systems that incorporate group 13 - group 13 bonds into stacked architectures will be investigated for their potentially interesting electrical and/or magnetic properties. Various approaches to anion recognition, including multidentate Lewis acid assemblies that incorporate group 13 or 14 elements, will also be pursued, and new approaches to the formation of cluster and cage-type compounds of the heavier group 13 elements will be developed. New combinations of main group elements (boron, aluminum, gallium, and indium) with carbon ring systems and with one another, will be prepared and investigated. Apart from the intrinsic interest in the structures and bonding descriptions of these rings, these compounds have potential as precursors to new polymeric and intermetallic materials with novel electrical and/or magnetic properties. The larger ring systems are appropriate for the selective and reversible binding of anions, and thus have potential applications in anion transport and homogeneous catalysis