Nuclear Magnetic Resonance Spectrometry

Polyhedron –Nuclear Magnetic Resonance Spectroscopy
Polyhedron Laboratories offers Nuclear Magnetic Resonance (NMR) Spectroscopy, Ultraviolet-Visible Spectroscopy (UV-VIS), and far Infrared Spectroscopy.

Nuclear Magnetic Resonance Spectroscopy, more commonly referred to as NMR Spectroscopy, is the procedure that takes advantage of the magnetic properties of nuclei. Two important NMR Spectroscopy techniques are carbon-13 NMR and proton NMR. In its most straightforward form, NMR Spectroscopy allows for the identification of each atom in a pure molecule. Similar to using IR Spectroscopy in the identification of functional groups, examination of a 1D NMR spectrum shows the scientist how many atoms of each type and what atom environments exist within the specimen (sample). Since it is based in quantum mechanical nuclei properties, NMR Spectroscopy is reproducible, predictable, and very reliable.

Ultraviolet-Visible Spectroscopy, also known as Ultraviolet-Visible Spectrophotometry (UV/VIS), involves the spectroscopy of photons and spectrophotometry. UV/VIS Spectroscopy utilizes light in the visible as well as the adjacent near infrared (NR) and near ultraviolet (UV) ranges. Molecules undergo electronic transitions in this region of energy. There are two types of UV Spectrophotometers – in a single beam UV Spectrophotometer, light only passes through the specimen (sample); in a double-beam UV Spectrophotometer, light passes through a beam chopper that directs the beam alternately through a reference cell or the sample several times a second.

Far Infrared Spectrometry can measure rotational and vibrational transitions in the 600 μm to 2600 μm range. Spectra of compounds in this region are sensitive to crystal structure.

NUCLEAR MAGNETIC RESONANCE
SPECTROMETRY

 Proton 60 MHz including integration
Wide line NMR (variable temperature)


 

ULTRAVIOLET - VISIBLE - NEAR INFRARED
SPECTROSCOPY

 0-6 Absorbance