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Nuclear Magnetic Resonance Laboratory

A new 600 MHz NMR spectrometer provides a full range of chemical analysis, structural studies, and physicochemical measurements based on an extraordinary combination of instrumentation and accessories.  A dedicated laboratory provides all the necessary infrastructure.  Major features of the spectrometer are summarized below:

600 MHz 5 mm QNP Cryogenic Probe:

  • enables multipurpose NMR measurements for 1H, 13C, 31P, and 15N
  • the cryogenically cooled probe is three to four times more sensitive than conventional probes, which allows for the measurement of lower concentrations, or for greatly shortened experiment times (it's as much as 16 times faster than a conventional probe)
  • automatic routines for shimming, tuning and matching
  • sample temperature is controllable from 0 °C to 80 °C
  • 1H sensitivity is >2600:1

600 MHz 5 mm BBFO Probe:

  • enables multipurpose NMR measurements for 1H, 19F, or any nucleus in the range from 31P to 15N
  • automatic routines for shimming, tuning and matching
  • sample temperature is controllable from -150 °C to +150 °C
  • 1H sensitivity is >850:1 

nmr plot

A 13C spectrum of Jet A kerosene in CDCl3 (inverse gated
decoupling, 1.5% Cr(acac)3, 4120 scans).

600 MHz 4 mm HX CP-MAS (solids) Probe:

  • the broadband channel is tunable from 31P to 15N
  • 15 kHz maximum spinning speed
  • 13C linewidth: 4.6 Hz (adamantane)
  • 31P sensitivity: S/N = 3221 (ammonium diphospate, 2 scans)13C sensitivity: S/N = 139 (natural abundance glycine, 4 scans)
  • 15N sensitivity: S/N = 16 (natural abundance glycine, 4 scans)

Pulsed-Field-Gradient Diffusion Probe:

  • gradient strength of 18 T/m
  • sample temperature is controllable from -20 °C to +80 °C
  • three exchangeable inserts, one tuned singly for 1H
  • water cooling for high duty cycles
  • micro-imaging capability

 

 

Contact

Thomas J. Bruno, 303-497-5158
bruno@boulder.nist.gov

Facility Manager:

Dr. Jason Widegren (jason.widegren@nist.gov) is the operator of the instrument, backed up by Dr. Tara M. Lovestead (taral@boulder.nist.gov).  All hands-on operations and experimental set up are handled by Dr. Widegren.  

NMR Users Group:

Scientists that have experiments on the NMR are members of the users group, which meets to discuss experiment proposals, address administrative and safety issues, and for periodic seminars.  

600 MHz Nuclear Magnetic Resonance Spectrometer; Dr. Widegren is shown inserting a sample for measurement
NMR Boulder
Analytical Data Compilation Reference Materials
analytical chemistry reference books

13C Spectra Correlation

Correlation-Chart_2