MRI: Acquisition of Single-Crystal X-ray Diffractometer

MRI：获取单晶 X 射线衍射仪

• 批准号: 0521047
• 负责人: Bruce Foxman
• 金额: $ 30.68万
• 依托单位: Brandeis University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-08-01 至 2008-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0521047&HistoricalAwards=false
• 关键词: MRI; Acquisition; Single; Crystal; ray

With support from the Major Research Instrumentation (MRI) Program, the Department of Chemistry at Brandeis University will acquire a single-crystal X-ray diffractometer with CCD detector and low temperature capability. By careful analyses of detailed structural chemical data, made possible by the enhanced capabilities of the new instrument, the five major users will: (i) address the relationship between ligand design and catalytic behavior of organometallic compounds as catalysts for carbon-carbon and carbon-heteroatom coupling reactions and carbon-hydrogen bond activation; (ii) expedite total synthesis and methods development by determination of the structure and stereochemistry of intermediates and final products in real time; (iii) explore the origin of enantioselectivity in practical and efficient organic catalysis; and (iv) promote the control of reaction products and stereochemistry using the solid state as a synthetic medium.The X-ray diffractometer allows accurate and precise measurements of the full three dimensional structure of a molecule, including bond distances and angles, and it provides accurate information about the spatial arrangement of the molecule relative to the neighboring molecules. These studies will have an impact in a number of areas, especially synthetic chemistry.

在主要研究仪器（MRI）计划的支持下，布兰迪斯大学化学系将获得一台具有CCD检测器和低温能力的单晶X射线衍射仪。通过对详细的结构化学数据进行仔细分析，并借助新仪器的增强能力，五个主要用户将：（i）解决配体设计与有机金属化合物作为碳-碳和碳-杂原子偶联反应和碳-氢键活化催化剂的催化行为之间的关系;（ii）通过真实的测定中间体和最终产物的结构和立体化学，加快全合成和方法开发;（iii）探索实际和有效的有机催化中对映选择性的起源;和（iv）促进使用固态作为合成介质的反应产物和立体化学的控制。X射线衍射仪允许准确和精确地测量分子的完整三维结构，包括键距和角度，并且它提供关于分子相对于相邻分子的空间排列的准确信息。这些研究将在许多领域产生影响，特别是合成化学。