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Magnetic Resonance (NMR & EPR)

Magnetic Resonance (NMR & EPR)

The NMR Facility is located near the east entrance of Stephenson Life Sciences Research Center. We provide training and access to all researchers who wish to use our instrumentation. In addition to researchers within the Department of Chemistry and Biochemistry, we are open to research groups from outside our department and outside the University of Oklahoma.

Our facility houses three Varian NMR Spectrometers and a Bruker EPR. We also have a small wet lab with a ventilation hood available for sample preparation. 

Instrumentation

500 NMR Spectrometer

The 500 NMR spectrometer was originally purchased as a VXR model in 1987 and was completely upgraded to a VNMRS model by the University in 2006 with the addition of Dr. Susan Schroeder and Dr. Robert Cichewicz to the Department of Chemistry and Biochemistry Faculty.

The spectrometer is a three channel, 28 shims Varian VNMRS-500 equipped with two probes: triplet resonance H{13C/15N} PFG probe, and a tunable indirect detection 1H{15N-31P} PFG probe.

400 MHz NMR

The 400 MHz NMR was originally purchased as a Varian Unity/Inova model in 1994 and was completely upgraded to the Varian VNMRS model in October, 2007 under the NSF Multi-user Grant # 0639199.

The system is complete with robotic sample insertion, automatic tuning and variable temperature accessories. The system is equipped with two probes: a auto-tunable indirect detection 1H{15N-31P} PFG probe and a auto-tunable Dual Broadband 15N-31P {1H} PFG probe optimized for broadband detection.

300 MHz NMR

The 300 MHz NMR was purchased in 2000 under a NSF multi-user grant.  It operates with a 4-nuclei autoswitchable PFG probe. It can collect 1H/19F/13C/P31 without retuning the probe.

This instrument is designed for walk-up use and is primarily used by the synthetic chemistry groups.  Mornings, Evenings and Overnight time can be reserved in advance in large blocks, but daytime can only be reserved in 15 minute blocks.

Training, Virtual NMR and Helpful Links

All students will begin training on the 300 NMR.  Training sessions will be approximately 45 minutes in duration and will be held as many times as necessary for the student to gain competency.  More advanced students and post-docs may gain certification by demonstrating their ability to use the instruments and by completing the assignments.

Certification to use the 300 NMR will be given as NMR Test #300-1, Test #300-2 and Practical Assignments #300-1 and #300-2 are completed as approved by Dr. Nimmo.

Training will begin on the 400 upon successful completion of 300 training. Certification to use the 400 NMR will be given as NMR Test #400-1, and Practical Assignments #400-1 and #400-2 are completed as approved by Dr. Nimmo.

Training will begin on the 500 upon successful completion of 400 training and Test #500-1. Certification to use the 500 NMR between 8-5 Monday-Friday will be given as NMR Test #500-2 is completed as approved by Dr. Nimmo. Unlimited access will be given upon the completion of NMR Test #500-3

Additional training may be requested on an individual basis. The training here represents the most basic and common use of the spectrometers in our department.

Variable temperature training will be given as needed.  Supervision of variable temperature experiments will continue until both the NMR facility manager and the student are completely confident of the student's ability to safely carry out these experiments independently.

All students will be provided a NMR Facility User Manual which details policies and gives step by step instuctions for operation of the instruments.  A pdf of this manual can be downloaded from the following link: 

NMR Facility User Manual (pdf)

NSF CHE#0639199

Goal: Provide NMR access to regional undergraduate institutions

Several regional undergraduate institutions wish to improve the teaching of their students with NMR experiments; however they do not have access to instrumentation. We will provide resources to these undergraduate institutions much in the same way that the Pacific Northwest National Laboratory (PNNL) operates a virtual NMR facility. This program has been successful with regards to bringing high field NMR expertise to other institutions.

Regional undergraduate institutions have different needs than large research institutions. Undergraduate universities require virtual NMR facilities which are available to them with regards to training, proximity and instrument time. Our program will model PNNL in providing teaching and research opportunities to regional undergraduate institutions with the 400 MHz NMR, which is sufficient for our external user base.  We will provide additional benefit through on-site training, tours and demonstrations in addition to remote operation and observation of the NMR experiment. Samples will be mailed to the NMR laboratory where a graduate student assistant will make the NMR samples, load the samples into the autosampler and clean the tubes at the conclusion.

Success of the remote access by the Undergraduate institutions is heavily dependent on the availability and quality of training.  It is imperative that both the professors and the students understand how to properly use the instrument.  Therefore, four workshops will be had for the purpose of training and collaboration of the professors. The workshop will be divided into parts:  effective teaching technique discussions and NMR training. Training will continue throughout the year via remote screen sharing.

 

Instrument time is scheduled using the Faces On-line NMR Time Sign-up web page.  Our group name is OU-NMR.  A username and password will be provided to each user at the initial training session.

The Basics of NMR by Joseph P. Hornak, Ph.D.

NMR Facility User Manual (pdf)

Contact Information

TBD, Manager
University of Oklahoma
Department of Chemistry and Biochemistry
Stephenson Life Sciences Research Center
101 Stephenson Parkway
Rm 1703
Norman, OK 73019
Phone: (405) 325-2843
Email: TBD