UW CHEMISTRY NMR

Hello All

Immediately : You can start booking time and use the instrument.

Important Points to Keep in Mind :

• This is a manual tune/match Broadband probe i.e. 1H and all other nuclei
  • This means that you must remember to run the “wobb” command and then do the tuning/matching by hand.  (Did you check out the video put together by Adrienne ? If not, here is the link:) https://drive.google.com/file/d/14B0hCzBXTScWPVssdM7SEh-iSPPyh_3a/view?usp=sharing
• This probe does NOT have a gradient coil
  • This means that you cannot do Topshim to optimize the field homogeneity. This has to be done by hand.
  • Before we go there,  always remember to load the optimized shim for this probe : rsh stdbbo
• ALWAYS Spin the Sample :
  • Given the fact that you may not have the time/inclination to do shimming by hand, take advantage of the excellent improvement in resolution by spinning the sample.
  • You can type on command line “ro on” (two separate words).
  • You can also use the Spin button on the software BSMS keyboard (launched using “bsmsdisp” from command line)
  • I cannot emphasize enough this last point.  I show below a comparison of the spectra that is run WITH and WITHOUT spinning.  You can figure out easily which is which !

UPDATE ON THE ATMA PROBE : We are still working on reviving the usual probe and sure enough we would like to get it back in shape as soon as we can.   But, this exercise of using an alternate probe with its older tuning/matching as well as shimming methods will definitely serve you well in a pinch.  Its a valuable skill set to acquire.

Thank you

NMR Facility Manager

11/6/2020