NMROSU
Oklahoma Statewide Shared Nuclear Magnetic Resonance Facility
The Oklahoma Statewide Shared Nuclear Magnetic Resonance Facility provides a diverse array of magnetic resonance research capabilities for routine and advanced analysis of both solution and solid-state samples.
The facility is home to four spectrometers, two with 400 MHz magnets mainly for acquisition of spectra of liquid-state samples, one 600 MHz spectrometer outfitted for both liquids and solids, and one 800 MHz spectrometer with cryoprobe.
The N800 with 24-sample changer provides very high sensitivity detection of ¹H and ¹³C in liquid-state samples, specializing in multidimensional biomolecular NMR and also providing for direct ¹³C acquisition.
On the A400, a sample changer allows for walk-up solution state analysis of ¹H, ¹³C, 31P, and ¹⁹F, as well as advanced techniques. On the A400, N600, and I400 multi-use probes (SmartProbe, OneNMR Probe) designed for both direct and indirect detection permit a variety of 2D techniques for molecular structure determination (e.g. COSY, NOESY, HSQC, HMBC, TOCSY) of molecules in solution.
Instruments in the facility are available to all academic, research, or commercial users. The facility is located in the Department of Chemistry, Physical Science Building.
Funds for the Oklahoma Statewide Shared NMR Facility equipment and facilities obtained in 1996/1997 were provided by the National Science Foundation, EPSCoR, the Oklahoma State Regents for Higher Education, the W.M. Keck Foundation, and Conoco, Inc. The Avance 400 spectrometer, installed in 2013, was purchased with a grant from the OSU Vice President for Research, who has also generously supported several vital upgrades over the years. Funds for the Neo 800 installed in 2020 were provided by the National Science Foundation, with generous matches and support from within OSU including from the Office of the Vice President for Research, College of Arts and Sciences, Chemistry Department, and Regents Professor Andrew Mort.
Magnetic Resonance Instruments
- Bruker Avance 400 MHz

A400 (2013) Location: Room 312 of Physical Science I
Description:
The Bruker Avance 400 is a two-channel system with ultra-shielded standard-bore magnet and 5 mm BBFO SmartProbe. The SmartProbe does both direct and indirect detection well and allows pulsing on any nucleus in the group 15N - 31P, 19F on one channel and 1H on the other channel.This instrument is also equipped with Bruker SampleXPress casette autosampler with 60 positions, and operated by IconNMR.
To utilize the instrument, obtain training and an account from Dr. Teymoori. Many pulse sequences are available for one- and two-dimensional spectra. Experiments are acquired near room temperature only (no VT operation). - Bruker Neo 600 MHz

Description of Bruker Neo 600 MHz Spectrometer:
80 MHz system clock with 12.5 ns synchronicity on all channels.
Timing and Gradient Control Unit (GTU) for 10 A high resolution NMR Z gradient amplifier, controlling the overall timing of system (all RF channels, gradients, real time pulses, triggers).
3 Transceiver Units providing full broad banded transmit and a full broad banded receive channel up to 1.2 GHz. Multi-receive ready.
Pulse program synchronization with up to 4 Trigger inputs at 12.5ns resolution (e.g. for high speed MAS rotor synchronization).
High performance and high power preamplifier system with 1H, 2H, BBF, 13C, and 15N preamplifier modules. Accurate tuning and matching with factory calibrated preamplifiers and fully integrated automatic tuning and matching (with liquid-state ATM probes).
Bruker SmartVT unit for temperature control.
Linear RF amplifiers (BLAH500, BLA2BB500).
BCU II unit for cooling of samples down to ca. -40 ºC.PROBES:
Liquid-state probes:
TXI1H{13C/15N} 5mm triple resonance indirect detection probe. (ATM)
BBO BBF-H-D-05 SmartProbe: 5 mm double resonance probe with 1H on one channel and Broadband (31P to 109Ag)/19F on the other channel, for direct and indirect detection experiments. Allows observation of 19F with 1H decoupling and performance of 2D 1H/19F spectroscopy. Temperature range -150 ºC to +150 ºC. (ATM)
Solid-state magic angle spinning probe:
Triple Resonance 13C/15N/1H Solid-State 3.2 mm MAS. - Varian Inova 400 MHz

I400 (console 1996, magnet 1989)
Location: Room 012 of Physical Science I
Description:The Inova 400 has two full-band RF channels with linear amplifiers, waveform generators, Z pulsed field gradient capability, and Millrock chiller for temperature control down to about -50 °C. The I400 compliments the A400, being available for long term scheduling for longer experiments, series of experiments, or variable temperature operation.
PROBE – newer
Varian OneNMR Probe, 1H-19F/15N-31P Z PFG for direct and indirect detection (-80 to 130°C) (2010)PROBES – older (1996)Nalorac 5-mm 1H{15N-31P} Z PFG Indirect Probe (60 gauss/cm gradient along the Z axis)
Varian 5-mm 1H-19F/15N-31P Switchable Probe, VT (-150 to 150°C)
Varian 5-mm 1H-19F/13C-31P Auto·nmr Probe, VT (-150 to 150°C)
Varian 5-mm Solids CP-MAS Probe - Bruker Neo 800 MHz

N800 (2020)
Location: Room 190 of Physical Science I, (NMR Building)
The Neo 800 with cryoprobe and sample changer is available for highly sensitive 1H and 13C direct acquisition and multidimensional biomolecular experiments with direct acquisition of 1H and indirect acquisition of 13C and 15N.
Description of Bruker Neo 800 MHz Spectrometer:
80 MHz system clock with 12.5 ns synchronicity on all channels. Timing and Gradient Control Unit (GTU) for 10 A high resolution NMR Z gradient amplifier (GAB/2), controlling the overall timing of system (all RF channels, gradients, real time pulses, triggers).
4 RF channel TRX1200 Transceiver Units providing full broad banded transmit and a full broad banded receive channel up to 1.2 GHz. Multi-receive ready. High performance and high power preamplifier system with 1H, 2H, 13C, and 15N preamplifier modules.
Accurate tuning and matching with factory calibrated preamplifiers and fully integrated automatic tuning and matching.
Bruker SmartVT unit for temperature control. BCU I unit for cooling of samples down to ca. 0 ºC.
Linear RF amplifiers (BLABB500, BLABBH2H500/100/150).
Cryo-Platform/5
SampleCase 24-sample changer.
BSNL Nitrogen liquefier eliminating the need for regular liquid nitrogen fills.
PROBE:
Liquid-state probe:
CP-TCI 1H(or 19F)/13C/15N 5mm inverse triple resonance high resolution cryoprobe, with actively shielded single axis Z-gradient, optimized for highest 1H and 13C sensitivity. (ATM)
1H sensitivity: >= 8600:1
13C sensitivity >= 1550:1