400 MHz NMR console

位于弗莱堡阿尔伯特-路德维希大学无机和分析化学研究所(IAAC)的MagRes核磁共振波谱仪池中的具有MagRes网络大口径磁铁的400 MHz核磁共振三通道设备是IAAC的主要研究核磁共振波谱仪。利用该装置进行了高分辨率核磁共振实验和固体核磁共振实验。应用的重点在于广泛的异核测量：既有相关实验的形式，也有直接探测核的形式，如19F、31P、7Li、119Sn、11B、71Ga、129Xe、23Na、27Al、93Nb、195PT、29Si、14N、47/49Ti、109Ag等。9.4特斯拉的场强是测量其中许多原子核的理想场强，因为许多自旋的化学位移和有效化学位移弛豫的大频率范围可能会导致在较高场强下探测这些原子核的问题，甚至由于快速的T1弛豫而使信号变宽，以至于它们几乎无法被检测到。对不同原子核的扩散进行了大量测量，以及在不同温度下的测量，特别是在低温下。此外，作为MagRes网络的一部分，该设备不仅为主要用户提供测量选项，而且还为弗莱堡大学的所有用户提供该站点的任何其他核磁共振波谱仪无法提供的测量选项(例如，19F，X{1H}，1H，X{19F}，X{1H，19F})。它还为固体核磁共振测量的供应做出了重要贡献。这台光谱仪的控制台现在已经有16年多的历史了，急需更新。由于目前的游戏机现已被制造商宣布为“停止使用”，因此未来的备品备件供应无法得到保证。新购买的控制台不仅确保了这一不可或缺的设备的操作安全，同时硬件(例如通过现代的“多接收”技术)也得到了现代化，现有的实验也得到了最新的更新，因此这台核磁共振光谱仪所支持的研究的竞争力也可以得到永久的保证。因此，阿尔伯特-路德维希-弗莱堡大学的MagRes网络将这台重要的400 MHz核磁共振光谱仪的控制台现代化放在了最优先的位置。我们预计，使用16年的非常稳定的磁铁的使用寿命仅为中等氦消耗量(约为180 L/a)将完全足以使用新的控制台操作核磁共振谱仪的预期寿命。

The 400 MHz NMR three-channel device with wide-bore magnet of the MagRes network, located in the MagRes NMR spectrometer pool at the Institute for Inorganic and Analytical Chemistry (IAAC) of the Albert-Ludwigs-University of Freiburg, is the main research NMR spectrometer at the IAAC. Both high-resolution and solid-state NMR experiments are carried out with this device. The focus of application lies in extensive heteronuclear measurements: both in the form of correlation experiments and in the direct detection of nuclei such, as e. g. 19F, 31P, 7Li, 119Sn, 11B, 71Ga, 129Xe, 23Na, 27Al, 93Nb, 195Pt, 29Si, 14N, 47/49Ti, 109Ag and others. The field strength of 9.4 Tesla is ideal for measuring many of these nuclei, since the large frequency ranges of the chemical shift and the effective chemical-shift relaxation of many of these spins can lead to problems in the detection of these nuclei at higher field strengths and even broaden signals due to the fast T1 relaxation to such an extent that they can hardly be detected. Diffusion measurements with different nuclei are carried out numerously, as well as measurements at varying temperatures, especially at low temperatures. In addition, as part of the MagRes network, the device not only offers the main users, but all users at the University of Freiburg measurement options that are not available with any other NMR spectrometer at the this site (e. g. 19F,X{1H}, 1H,X{19F}, X{1H,19F}). It also makes an important contribution to the supply of solid-state NMR measurements. The console of this spectrometer is now more than 16 years old and urgently needs to be renewed. Since the current console has now been declared "out of service" by the manufacturer, the supply of spare parts is not guaranteed in the future. The new purchase of the console not only ensures the operational safety of this indispensable device, but also at the same time the hardware (e. g. through modern "multi-receive" technology) is modernized and the available experiments are brought up to date, so that the competitiveness of the research supported by this NMR spectrometer can also be permanently guaranteed for the future. The modernization of the console of this important 400 MHz NMR spectrometer is therefore given the highest priority by the MagRes network of the Albert-Ludwigs-University of Freiburg. We expect that the service life of the 16-year-old and very stable magnet with only moderate helium consumption (approx. 180 L/a) will be completely sufficient to be able to operate the NMR spectrometer with the new console for its expected life time.