VXR400 Ready for 19F & 31P

A Nalorac 4-Nucleus probe has been installed on VXR400 for routine operation, replacing the Broadband probe. Like I400, users can now acquire 1H, 13C, 19F, and 31P spectra on the VXR400 without need of probe switch/tuning.

Please note that the old parameters you saved previously with the Broadband probe should NOT be used for the newly installed 4-Neclues probe (i.e. do not open one of your old FID files and click “acquire” or type “ga” to acquire new data). You should go through the standard experiment set-up procedures: click on “Experiments” in the menu bar then select a nucleus or an experiment. This would ensure to load appropriate parameters that were calibrated for the currently installed probe.

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Advanced NMR Training 8/18

We will be doing advanced NMR training on August 18th, Tuesday from 10am-noon. This will be a single 2-hour session focused on 2D NMR experiments (see the previous post) and it’s free of charge. We’ll be at an instrument so please email Frank for reservation. Also let him know if there are other days or times that would work better for you, as well as questions or specific requests.

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I500 Problem Fixed

A hardware problem which caused the spectrometer frequently to become “inactive” in the past two weeks has been fixed.

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I600 Open to Users

I600 is open to users again. A problem which sometimes caused long term experiments to stop early giving rise to incomplete data set has been fixed. If you have never used this spectrometer, please find the spectrometer information here.

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“emaildata” Works on I600

The macro command emaildata has been modified and now works on I600.

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“iuexit” Works on I600

The macro command iuexit has been modified and now works on I600. You can type iuexit or click Exit VnmrJ and Logout on VNMRJ GUI to exit VNMRJ and logout your account in one step.

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Advanced NMR Training

I’m considering having one more “advanced NMR training” session next week. It you’re interested, email Frank with your time preference (please choose as many as possible from the following time slots: Tuesday (1/20) – Friday (1/23), 10am-noon, 2-4pm).

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Advanced NMR Training

We will be doing advanced NMR training this Friday (1/9, 10am-noon), next Tuesday (1/13, 10am-noon) and Thursday (1/15, 2-4pm). These will be single 2 hour sessions. The basic concepts of 2D NMR will be introduced and we’ll go through setup, acquisition, processing and plotting of the common 2D NMR 1H-1H and 1H-13C experiments including COSY, TOCSY, NOESY/ROESY, HMQC/HSQC and HMBC/CIGAR.

We’ll be at a spectrometer so the number of attendees in each session will be limited to 4-6. If you plan to attend, please sign up on the online sign-up sheet. The training is free.

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Open FIDs Without Autoprocessing

By default, VnmrJ is set to automatically process NMR data when a FID file is opened. If you prefer to process your data using the parameters that were stored in your FID file, you can do so. All you need to do is to disable the autoprocessing feature: click Edit in the main menu, then click on System setting … to open the System setting window, click on the Display/Plot tab and uncheck Process data on drag-and-drop.

Now, when you open a FID file, VnmrJ doesn’t execute autoprocessing. You can retrieve the parameters (phase, integrals, scales, plot regions, etc.) stored in the FID file, and reprocess your data – just type wft or wft2da (for 2D data).

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I600 Open to Users

We have successfully installed a 600 MHz NMR spectrometer (I600) which was kindly donated by Merck. It is open to users now.

This spectrometer is fully loaded. It came with an INOVA console (the same model as our other spectrometers in C237) equipped with four RF channels, waveform generator on each channel, Z-axis PFG, and VT unit. A 5mm HCN PFG probe is currently installed for routine operation. The current configuration is optimized for proton detected experiments at high sensitivity, such as 1D proton, 2D COSY, NOESY, TOCSY, ROESY, HSQC, HMQC, HMBC, 1H diffusion, etc.. It also works for measuring 13C spectra but the 13C sensitivity (of the HCN probe) is only 50-60% of the 1H/13C dual probe on the I500 (therefore, we recommend you use the I500 for 13C measurements, not the I600). The variable temperature range of this HCN probe is -20 to 60°C.

A newer version of VNMRJ software (3.2A) was installed on the I600. We have made some modifications so the software GUI looks similar to those on our other spectrometers and you will find all the IU additions which were added to the VNMRJ 2.2D on the other spectrometers (*, **).

The I600 is located in C234. Your key for C237 would work for C234 as well. All users have their NMR accounts set up on the I600. You should be able to use the spectrometer right away. The same sign-up rules as for the I500 will be used for the I600.

No special training is needed. However, we recommend that when you use the I600 for the first time, have a NMR staff be with you.

* At this moment, the macro iuexit (or the Exit VnmrJ and Logout button on VNMRJ GUI) which enable users to exit VNMRJ and logout in one step does not work for VNMRJ 3.2A. To logout, you would need to type exit (or click Exit VnmrJ button) to exit VNMRJ first, then click System on the top of screen followed by clicking Log out username
Update on Jan. 27,2015: iuexit has been modified and now works for VNMRJ 3.2A.

** The macro emaildata also doesn’t work on the I600 at this time.
Update on Jan. 29,2015: emaildata has been modified and now works on I600.

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