Main-Group Deltahedral Clusters: Functionalization and Oligomerization by Design

主族三角面体簇：通过设计实现功能化和低聚化

• 批准号: 0446131
• 负责人: Slavi Sevov
• 金额: $ 36万
• 依托单位: University of Notre Dame
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-02-01 至 2009-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0446131&HistoricalAwards=false
• 关键词: Main; Group; Deltahedral; Clusters; Functionalization

Dr. Slavi C. Sevov, Department of Chemistry and Biochemistry, Notre Dame University, is supported by the Inorganic, Bioinorganic, and Organometallic Chemistry Program of the Chemistry Division for studies on the reactivity of homo- and hetero-atomic main-group deltahedral clusters (Zintl ions). The chemistry of such clusters is unique in that the constituting elements are in unusual negative oxidation states and have the potential to provide novel bonding, structures, coordination, and reactivity. The focus of the research will be on the solution and solid state chemistry and bonding of homo- and hetero-atomic anion clusters of germanium, silicon, tin, group II-V elements, and transition metals. The PI has already synthesized and characterized dimers, trimers, and tetramers of Ge9 clusters. These studies will be extended to larger oligomers of Ge and broadened to include Si, and the other elements mentioned above. A major effort will involve functionalizing the clusters through reactions with nucleophiles. This will allow addition of organic groups with various functionalities such as multiple bonds, aromatic rings, and heteroatoms, as well as various nucleophilic organometallic substituents.The knowledge of the chemistry of these clusters will help in foreseeing new compounds and materials with unusual properties. Such clusters are of interest as potential precursors to new classical materials (intermetallics, extended structures) as well as nano materials (nanorods, thin films, surface grafting) with novel electronic and magnetic properties. The project has a strong educational component. The training of undergraduate, graduate, and postdoctoral students, that include women and minorities, will be undertaken.

巴黎圣母院化学和生物化学系Slavi C. Sevov博士得到了化学研究的无机，生物促和有机金属化学计划的支持，用于同性和异性原子基团群体的反应性研究。这种集群的化学性质是独一无二的，因为构成元素处于异常的负氧化状态，并且有可能提供新颖的粘结，结构，协调和反应性。这项研究的重点将放在溶解和固态化学以及同型原子阴离子簇，硅，锡，锡，II-V组元件和过渡金属的粘结上。 PI已经合成并表征了GE9簇的二聚体，三聚体和四聚体。这些研究将扩展到GE的较大低聚物，并扩大到包括SI以及上述其他元素。一项重大努力将涉及通过与亲核试剂的反应来功能化簇。这将允许添加具有各种功能的有机基团，例如多个键，芳香环和杂原子，以及各种亲核有机金属取代基。这些簇化学的了解将有助于预见具有非同寻常特性的新化合物和材料。这些集群是具有新的经典材料（金属间，扩展结构）以及具有新型电子和磁性特性的纳米材料（纳米棒，薄膜，表面嫁接）的潜在前体。该项目具有强大的教育组成部分。将接受包括妇女和少数民族在内的本科生，研究生和博士后学生的培训。