Single crystal X-ray diffractometer

雅各布斯大学于2005年4月安装了DFG大型仪器赠款资助的单晶X射线衍射仪（布鲁克D8 SMART APEX II Kappa，单源Mo）。因此，这台仪器现在已经使用了16年以上，近年来由于仪器关闭，需要定期维修。布鲁克AXS于2020年3月通知我们，从2021年1月起，由于零件丢失，无法保证当前仪器仍然可以维修（该系统已于2012年停产）。该建议旨在用最先进的双源（Mo/Cu）X射线衍射仪取代现有仪器，以确保未来几年的平稳运行。特别是，Cu辐射（当前机器只有Mo辐射）将允许测量有机和有机金属化合物的XRD数据集，这是当前设备设置之外的重要扩展。这意味着雅各布斯和不莱梅的有机化学家可以在这台新机器上轻松测量他们的样品。迄今为止，在不莱梅市还没有双源（Mo/Cu）X射线衍射仪，因此，我们的同事不莱梅大学的Jens Beckmann教授明确支持这一提议（见随附的他的信）。单晶XRD是一种用于新型化合物和材料的固态结构表征的标准技术，因此，单晶X射线衍射仪是雅各布斯大学的必备仪器，以保持世界一流的研究标准。该仪器将由雅各布斯大学化学科学部的所有研究小组（无机，有机，物理有机，分析）使用（见用户概念和相应的支持信）。从2005年开始，目前的XRD设备就被广泛使用（全年无休，每周7天），Jacobs的大量出版物都记录了XRD数据。总之，购买一台新的双源（钼/铜）单晶X射线衍射仪对于雅各布斯大学继续进行世界级的研究至关重要，同时它将为不莱梅市提供一台尚未拥有的仪器，因此为该地区提供重要的科学资产。

Jacobs University installed a DFG large-instrument grant funded single-crystal X-ray diffractometer (Bruker D8 SMART APEX II Kappa, single-source Mo) in April 2005. Hence, this instrument is now > 16 years old and has required regular repair visits owing to instrument shutdowns in recent years. We were informed by Bruker AXS in March 2020 that from January 2021 onwards there is no guarantee that the current instrument can still be repaired, due to missing parts (the production of this system was discontinued in 2012). This proposal is meant to replace the current instrument with a top-of-the-line dual-source (Mo/Cu) X-ray diffractometer in order to ensure that a smooth operation is possible in the coming years. In particular, the Cu-radiation (the current machine has only Mo-radiation) will allow the measurement of XRD data sets of organic as well as organometallic compounds, which is an important extension beyond the current equipment setup. This means that the organic chemists at Jacobs and in Bremen could measure their samples easily on this new machine. To date there is no dual source (Mo/Cu) X-ray diffractometer in the city state of Bremen, and hence, our colleague Prof. Jens Beckmann from University Bremen explicitly supports this proposal (see his letter attached). Single-crystal XRD is a standard technique for the solid-state structural characterization of novel compounds and materials, and hence, the single-crystal X-ray diffractometer is a mandatory instrument for Jacobs University in order to maintain world-class research standards. The instrument is to be used by all research groups (inorganic, organic, physical-organic, analytical) in the chemical sciences division at Jacobs University (see user concept and respective support letters). The current XRD machine has been used extensively since 2005 (all year long, 7 days a week), as documented by the very large number of Jacobs publications that include XRD data. In summary, the purchase of a new dual-source (Mo/Cu) single-crystal X-ray diffractometer is of pivotal importance for Jacobs University to continue world-class research, and at the same time it will provide the city state of Bremen with an instrument that it does not yet have providing, therefore, an important scientific asset for the region.