A complete set of symmetry-adapted product operator was introduced to analyse multipulse FT-NMR experiments for spin-1/2 I2S and I3S systems. General cyclic commutation relations exist among the symmetrized product operators. These commutation relations govern the evolution rules of different order coherences under the action of the Hamiltonian in various stage of pulse sequence. The use of symmetry-adapted product operator algebra simplified the analysis of experiments and revealed more evident physical meaning. The procedure was demonstrated by the treatment of DEPT experiment performed on spin-1/2 I2S and l3S systems.
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