What is NMR? What is Spectrometer? What is Chemical shift?
Introduction NMR spectroscopy is the most powerful tool available for organic structure determination. It is used to study a wide variety of nuclei. The most common type of NMR: Proton and Carbon-13 1 H NMR (PMR): To determine the type and number of carbon of H atoms and spatial arrangement of them in a molecule. 13 C NMR Nuclear Magnetic Resonance(NMR) is a physical phenomenon in which nuclei in a magnetic field absorb and re-emit electromagnetic radiation. (CMR): To determine the type and number of carbon atoms and spatial arrangement of them in a molecule. The source of energy in NMR is radio waves which have long wavelengths (75-0.5m), and thus low energy and frequency (4-600MHz). Principles of NMR The theory behind NMR comes from a spin of a nucleus and it generates a magnetic field. Without an external applied magnetic field, the nuclear spins are random in directions. But when an external magnetic field (H0), is present the nuclei align themselves either with or a