What are the different Techniques of “NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY.”
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"Basic NMR techniques
The NMR sample is prepared in a thin-walled glass tube - an NMR tube.
When placed in a magnetic field, NMR active nuclei (such as 1H or 13C) absorb at a frequency characteristic of the isotope. The resonant frequency, energy of the absorption and the intensity of the signal are proportional to the strength of the magnetic field.
Chemical shift
Depending on the local chemical environment, different protons in a molecule resonate at slightly different frequencies. Since both this frequency shift and the fundamental resonant frequency are directly proportional to the strength of the magnetic field, the shift is converted into a field-independent dimensionless value known as the chemical shift.
J-coupling
Some of the most useful information for structure determination in a one-dimensional NMR spectrum comes from J-coupling or scalar coupling (a special case of spin-spin coupling) between NMR active nuclei. This coupling arises from the interaction of different spin states through the chemical bonds of a molecule and results in the splitting of NMR signals."
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M$H1 NMR
C13 NMR
F13 NMR & P31 NMR
N15 NMR & O17 NMR
CWNMR
FTNMR
2D_NMR &3D_NMR
COSY _CORRELATION SPECTROSCOPY
MRI_MAGNETIC RESONANCE IMAGING
ESR_ELECTRON SPIN RESONANCE SPECTROSCOPY
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