Abstract
The use of two-dimensional transform techniques in the observation of multiple-quantum transitions in large spin systems in anisotropic environments is described. In the case of partial resolution in the ω 2 dimension, it is shown that the signal to noise of the projection onto ω 1 of the absolute magnitude two-dimensional multiple-quantum spectrum is considerably greater than that of the Fourier transform of the t 2 = 0 cross section. In practical terms, multiple- quantum transitions of very high order may be observed with good signal to noise after acquisition periods much shorter than previously reported by cross section methods.
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