New Low Valent Group 13, 14 and 15 Species Stabilized by Ligands with Flanking Aryl Groups

由侧翼芳基配体稳定的新低价族 13、14 和 15 物种

• 批准号: 0094913
• 负责人: Philip Power
• 金额: $ 40.5万
• 依托单位: University of California-Davis
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-02-01 至 2004-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0094913&HistoricalAwards=false
• 关键词: New; Low; Valent; Group; 13

Dr. Philip P. Power, Chemistry Department, University of California - Davis, is supported by the Inorganic, Bioinorganic, and Organometallic Chemistry Program, to study low valent compounds of group 13, 14, and 15 elements. Ortho-Terphenyl and related ligands will provide a protected cavity which will allow low coordinate metal species to exist under conditions where they would normally be unstable. Metal-metal bonded species will be formed from these complexes. The results are expected to support the emerging viewpoint that a lack of hybridization rather than inherently weak pi interactions is the primary reason multiple metal-metal bonding is rarely encountered in the heavier p-block metals. The systems will be explored by a range of physical techniques including x-ray diffraction, multinuclear and dynamic nmr, uv-visible, infrared, and epr spectroscopies. The question of the nature of an element's chemical bonds is one of the most basic in chemistry. This project will probe the ability of aluminum, gallium, indium, germanium, tin, phosphorus, arsenic, antimony and bismuth to form double or triple bonds. In general these elements prefer single bonds, but in some cases can be induced to participate in multiple bonding. The results of the study will define the sorts of compounds these elements can form and will contribute to the design of, e.g., catalysts or advanced materials that are based on them.

Philip P. Power博士，化学系，加州-戴维斯大学，由无机，生物无机和有机化学计划支持，研究第13，14和15族元素的低价化合物。邻-三联苯和相关配体将提供受保护的空腔，其将允许低配位金属物质在它们通常不稳定的条件下存在。这些配合物将形成金属-金属键合物种。预计结果将支持新出现的观点，即缺乏杂化而不是固有的弱π相互作用是在较重的p区金属中很少遇到多个金属-金属键合的主要原因。这些系统将通过一系列的物理技术进行探索，包括x射线衍射、多核和动态核磁共振、紫外可见、红外和电子顺磁共振光谱。元素化学键的性质问题是化学中最基本的问题之一。该项目将探测铝、镓、铟、锗、锡、磷、砷、锑和铋形成双键或三键的能力。一般来说，这些元素更喜欢单键，但在某些情况下，可以诱导参与多重键合。研究结果将确定这些元素可以形成的化合物的种类，并将有助于设计，例如，催化剂或基于它们的先进材料。