Pharmacy Study Material

Nuclear Magnetic Resonance Spectroscopy INTRODUCTION NMR is defined as the measurement and interpretation of the radiofrequency which induces the transitions in the nuclei by absorbing the radiofrequency waves and the spectra are known as the nuclear magnetic resonance spectra. The atoms which contain the nuclei with the property are called the spin. The number of spins of the active spin nucleus is denoted by the spin quantum number,  I . The spin is the property of the elements containing the odd mass or odd atomic number. The following Table shows the spin quantum numbers of the nuclei: Element Spin quantum number (I) Number of the spin states 1 H 1/2 2 2 H 1 3 13 C 1/2 2 14 C 1 3 Table for the elements with the spin quantum number and spin states The resonance is defined as the change in the nuclear spin of the nucleus from low energy state to high energy state by absorbing the energy. This is possible by the creation of magnetic field by placing th...