The use of selective methods of heteronuclear NMR spectroscopy in studies of multicomponent systems

Some important aspects of the use of selective methods in NMR spectroscopy for interpreting the spectra of complex multicomponent systems, measuring the spin–spin coupling constants and determining the structure of compounds are discussed. Procedures for recording selective spectra and the application of selective radiofrequency pulses together with magnetic field gradient pulses are described. Practical methods for suppression of water signals in the study of biological samples are considered.