(Model Avance 400 MHz Manufactured by Bruker)

Fourier-transform NMR spectrometers use a pulse of radio frequency (RF) radiation to cause nuclei in a magnetic field to flip into the higher-energy alignment. All of the nuclei will re-emit RF radiation at their respective resonance frequencies.

The FT-NMR spectrometer AVANCE 400MHz (9.4 tesla) consists of three major components:

1- A superconducting magnet with the probe containing the sample to be measured.

2- A console containing all the electronics used for transmission and reception of radio frequency (RF) pulses through the preamplifier to the probe.

3- A computer by means of which the operator runs the experiments and processes the acquired NMR data.

It is manufactured by Bruker company. There are several probe associated with this instrument:

- QNP                5mm            ¹H /¹⁹F / ³¹P / ¹³C

- BBO                10mm     109Ag to 31P observe & 1H observe

- BBO                5 mm      109Ag to 31P observe & 1H observe

- BBI                  5mm      Inverse...109Ag to 31P observe & 1H observe-CP/MAS         4mm

This system is a Fourier transform (FT) spectrometer capable of one-, two-, and three-dimensional spectroscopy experiments on a wide range of nuclei.

1- Magnetic study of paramagnetic compounds

2- Study  of dynamic and determination of reaction mechanisms

3- Determination of the structures of organic, inorganic and biological compounds

4- Study of solid compounds using solid probe

5- Quantitative analysis

6- Study of  thermodynamic of reactions.