UW CHEMISTRY NMR

Announcments & Equipment Logs

NMR Applications

(RE)INTRODUCTION OF MYSELF…

Dear NMR users/enthusiasts Although this space was created primarily to communicate about instrument related issues and the progress made to remedy those,  in the outset I will warn that this post is an unabashed advertisement of sorts about myself, but within the context of NMR only. In this day and age it makes sense to […]

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ATTENTION USERS ! – SPECIALIZED TRAINING PLANS – PLEASE READ !

Over and above the simple but minimal training that is provided by the facility for the new users,  we always recognized the need for training you in some special tasks such as how to properly maneuver the Lock facility or how to Shim by hand when Topshim fails, to site as examples. We are finally […]

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AV700 SOLIDS NMR USAGE : BRIEF CLARIFICATION

Unlike the solutions spectrometers,  solid state NMR instrument is not amenable to a walk-on mode of operation, by the very nature of this spectroscopy.   First of all, the technique requires the use of an expensive rotor (approx. cost $1000/- ) in place of the NMR tube that costs about $10/-.  The sample preparation also needs […]

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AV500 – GRADIENT ASSISTED SHIMMING – Topshim program

Many of you might be aware that the AV500 console acquired the ability to do fully Automatic shimming using the Topshim program from within Topspin.  The system uses either 1H or 2H NMR resonance signals to accomplish this along with gradient coils placed in the NMR probe.  This means that no matter which lock solvent […]

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PHOENIX : UP AND RUNNING

Data server is functioning normally.  Please send me a feedback if you have any issues.

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FACILITY UPDATE : Help for Users – contacting facility manager

With the departure of Paul Miller from the NMR Facility to the new position,  users are requested to direct all queries related to day to day NMR operations to the Facility Manager,  Rajan Paranji i.e. the author of this note.   I can be reached via the following means : Phone : 206 685 2581 […]

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AV500 : automation scripts not working

Familiar automation scripts such as ‘xaua’ are not functioning as expected.  This is being looked into.  Please use workarounds that are viable. For instance, ‘xaua’ can be replaced with ‘rga’ followed by ‘zg’.   Please contact facility staff for assistance with this.

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AV500 SYSTEM UPDATE

The AV500 system will receive a new computer that controls the spectrometer and runs the Topspin software.  The system upgrade is slated for tomorrow, Tuesday the 14th Aug ’12, from 1.00 pm to 5.00 pm.  There will be no changes in the way users access the spectrometer after the upgrade.

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AV800 : REMINDER – WALK ON USER TIME

This is a reminder that the Walk-on user time with the 800 NMR spectrometer will be available from coming Monday, 13th Aug.,  10.30 am until Wednesday, 15th Aug,  11.00 am. Please contact Rajan if you are planning to engage the instrument during this time.

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IMPORTANT – PLEASE READ : AV500 VT UPDATE

We had several requests to explore increasing the high temperature limit on the instrument.  This needed rather careful testing, without which we could precipitate a catastrophic quench of the magnet.  On the AV500 system, such a test was completed recently.  We have concluded that, for experiments that need to run for more than a few […]

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