Metallacarbatrane, Hydride, Fluoride, and Metal-Metal Bonded Compounds of the Main Group Elements: Synthesis and Applications

金属碳氢化合物、氢化物、氟化物和主族元素的金属-金属键化合物：合成与应用

• 批准号: 1465095
• 负责人: Gerard Parkin
• 金额: $ 43.5万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-07-01 至 2020-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1465095&HistoricalAwards=false
• 关键词: Metallacarbatrane; Hydride; Fluoride; Metal; Bonded

In this project funded by the Chemical Synthesis Program of the Chemistry Division, Professor Gerard Parkin of the Department of Chemistry at Columbia University investigates fundamental chemistry of compounds of Earth-abundant main group metals. This research is required for developing the use of such compounds as catalysts for organic transformations and for constructing new materials. Catalysts are critical for the conversion of chemical feedstocks into more useful compounds, and an important objective is to discover new catalysts that do not incorporate precious metals. Magnesium and calcium are two examples of Earth-abundant main group metals that are investigated. The investigation focuses on the use of multidentate ligands to enforce well-defined coordination environments for main group elements. Specific examples of ligands that are used in this research include (i) tridentate tripodal ligands, such as tris(pyrazolyl)hydroborato and tris(2-mercaptoimidazolyl)hydroborato, and (ii) tetradentate tripodal ligands, such as tris(2 pyridylthio)methyl, while examples of target compounds include those with terminal alkyl, hydride, and fluoride ligands, and also those which feature metal?metal bonds. The research involves the use of single crystal X-ray diffraction and NMR spectroscopic methods to determine the structures of the synthesized molecules, and computational methods to analyze the bonding. An important aspect of the activities is that it involves training students to be future professionals, be it in an academic or industrial setting. As is customary for the research group, the research activities not only involve graduate and undergraduate students, but also involve high school students, thereby providing a significant STEM experience for them at a critical point in their education. In addition, the research group is also involved in performing chemistry demonstrations for children from ethnically diverse New York City public middle schools.

在化学部化学综合计划资助的该项目中，哥伦比亚大学化学系的杰拉德·帕金教授调查了地球含有主要基团金属化合物的基本化学。 开发使用催化剂等化合物进行有机转化和建造新材料所需的研究。 催化剂对于将化学原料转化为更有用的化合物至关重要，一个重要的目标是发现不掺入贵金属的新催化剂。 镁和钙是研究的两个量度的主要基团金属的例子。该调查的重点是使用多齿配体来为主要组元素实施明确定义的协调环境。 这项研究中使用的配体的特定例子包括（i）三叉后三端配体，例如tris（吡唑基）氢化物和Tris和Tris（2-羟基咪唑基）液压，以及（ii）四边形三跨三元配体，例如诸如2吡啶基的甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基体系，氟化物配体以及具有金属金属键的氟化物。 该研究涉及使用单晶X射线衍射和NMR光谱方法来确定合成分子的结构，以及分析键合的计算方法。 活动的一个重要方面是，它涉及培训学生成为未来的专业人员，无论是在学术或工业环境中。按照研究小组的习惯，研究活动不仅涉及研究生和本科生，而且还涉及高中生，从而在他们的教育中为他们提供了重要的STEM体验。 此外，研究小组还参与了来自纽约市公立中学的儿童进行化学示范。