NMR Spectrometer: 750 MHz NB (17.6 Tesla) Varian Inova

The Varian Inova 750-MHz nuclear magnetic resonance (NMR) spectrometer is a narrow-bore system equipped with a Varian Inova console. This system is capable of performing both solid-state and solution-state NMR experiments. EMSL researchers mainly use the solution state to conduct protein structure determination studies, while the solid-state capabilities are used to conduct material science studies, although biological solid-state experiments are becoming increasingly more common.

The console is equipped with four radio frequency channels and a triple-axis gradient amplifier. The solutions probes include two 5-mm HCN (Z-gradient) probes, an 8-mm HCN (Z-gradient) probe, and a 5-mm HCP (Z-gradient) probe. The solids probes consist of a 5-mm HX MAS probe (15-kHz spinning), a 5-mm medium gamma HX MAS probe (12-kHz spinning), and a low gamma HX MAS probe (12-kHz spinning). The console is controlled by a Sun Blade 100 computer connected to the network.

Researchers may operate this system independently and are provided as much training as necessary for independent operation. Many users opt to operate this system remotely; in this case, the sample is shipped by the user to EMSL, where a facility researcher places the sample in the magnet and tunes the probe. The user then can operate the spectrometer through a secure connection over the Internet.

All Related Publications Related Publications

1. The Structure and Purity of a Reference Dye Standard used for Quantification of C.I. Solvent Red 164 in Fuels.
2. Adsorption of Amelogenin onto Self-Assembled and Fluoroapatite Surfaces.
3. Neutron Powder Diffraction and Molecular Simulation Study of the Structural Evolution of Ammonia Borane from 15 to 340 K.
4. N-15 NMR spectra of naturally abundant nitrogen in soil and aquatic natural organic matter samples of the International Humic Substances Society.
5. An Experimental Study of the Dissolution Rates of Simulated Aluminoborosilicate Waste Glasses as a Function of pH and Temperature under Dilute Conditions.