Single crystal diffractometer

单晶衍射仪

• 批准号: 527802652
• 金额: --
• 依托单位: Rheinisch-Westfälische Technische Hochschule Aachen
• 依托单位国家: 德国
• 项目类别: Major Research Instrumentation
• 财政年份: 2023
• 资助国家: 德国
• 起止时间: 2022-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/527802652?language=en
• 关键词: Single; crystal; diffractometer

Single-crystal X-ray diffraction is one of the most powerful analytical methods for the structure elucidation of organic molecules. This valuable technique provides direct information on the types of atoms, their linkage and spatial arrangement in molecules. The characterization of new and structurally complex chemicals is often not possible without the use of modern X-ray diffraction methods. The Institute of Organic Chemistry (IOC) at RWTH operates a 14-year-old diffractometer, which is, due to recurring technical issues and defects, not able to support the research activities of the researchers working in the IOC. The diffractometer requested in this application will replace the old one and provide modern X-ray analytical facilities which are vital to assist the research conducted in the IOC. This device will support all IOC research groups in advancing their cutting-edge research programs and continue the work currently funded by, for example, the DFG, the Volkswagen Foundation and the ERC Horizon 2020 Framework. The research work conducted in the IOC is very diverse, spanning a wide variety of directions, which raises different analytical needs. The analysis of air and temperature sensitive organometallic species and supramolecular aggregates as well as the determination of the absolute configuration of complex chiral molecules are all aspects that can often be addressed only using modern X-ray diffraction techniques. In this application, we are requesting a single-crystal X-ray diffractometer equipped with a double copper and molybdenum radiation sources and a temperature control unit. The copper-radiation system will be essential for the analysis of chiral organic compounds consisting only of light atoms (e.g. C, H, O, N) as it offers direct access to the correct stereochemical configuration without having to resort to additional chemical modifications (e.g. derivatization to form diastereomers). This technique will also enable the analysis of poorly or weakly scattering crystals as well as crystals with large unit cells. The molybdenum source will also be crucial as it enables fast measurements required for the analysis of sensitive organometallic complexes and chiral organic compounds containing heavy atoms. Since many organic compounds are thermally labile, it is crucial to be able to run these analyses at low temperature. This means that further technical requirements need to be considered to address all the IOC’s analytical needs. In summary, with this application we request a powerful and easy to maintain 4-circle single-crystal diffractometer equipped with a modern pixel detector, two microfocus sources, a cooling unit and a user-friendly software. This instrument will be a strategic addition to the IOC core facilities and will allow all research groups to continue their work in a globally competitive environment equipped with cutting-edge technology.

单晶 X 射线衍射是有机分子结构阐明的最强大的分析方法之一，这种有价值的技术提供了有关原子类型、分子中的连接和空间排列的直接信息，以及新的和结构复杂的表征。如果不使用现代 X 射线衍射方法，通常无法对化学物质进行分析。由于反复出现的技术问题和原因，RWTH 有机化学研究所 (IOC) 使用了一台已有 14 年历史的衍射仪。缺陷，无法支持国际奥委会研究人员的研究活动。本申请中要求的衍射仪将取代旧的衍射仪，并提供现代 X 射线分析设施，这对于协助国际奥委会进行的研究至关重要。将支持国际奥委会所有研究小组推进其前沿研究项目，并继续目前由 DFG、大众基金会和 ERC Horizo​​n 2020 框架资助的工作。国际奥委会开展的研究工作非常多样化，涵盖多个领域。各种各样的方向，这提出了不同的分析需求。对空气和温度敏感的有机金属物质和超分子聚集体的分析以及复杂手性分子的绝对构型的确定通常只能使用现代 X 射线衍射技术来解决。在此应用中，我们需要配备双铜和钼辐射源以及温度控制单元的单晶 X 射线衍射仪。铜辐射系统对于手性有机化合物的分析至关重要。仅由轻原子（例如 C、H、O、N）组成，因为它可以直接获得正确的立体化学构型，而无需诉诸额外的化学修饰（例如衍生形成非对映异构体）。钼源也至关重要，因为它可以实现敏感有机金属配合物和含有重原子的手性有机化合物分析所需的快速测量。由于许多有机化合物具有热不稳定性，因此能够在低温下进行这些分析至关重要，这意味着需要考虑进一步的技术要求来满足 IOC 的所有分析需求。 总之，对于此应用，我们需要强大的功能。易于维护的 4 环单晶衍射仪，配备现代像素探测器、两个微焦光源、冷却装置和用户友好的软件。该仪器将成为 IOC 核心设施的战略补充，并将允许所有研究小组使用。到在配备尖端技术的全球竞争环境中继续工作。