Multiplet Single Line Excitation (MUSLE) experiment to interpret complicated multicomponent systems spectra
M.G.Morozov, Y.E.Chernysh, V.A.Volynkin, R.Freeman
Southern Federal University, Rostov-on-Don
Kuban State University, Krasnodar
Jesus College, Cambridge, Great Britain
morozov.rf.nmr@gmail.com
A new experiment makes use of two-pulse sequence. It represents a combination of single line multiplet-selective pulse and nonselective one or both selective pulses. Each of such a combination is suitable for solving concrete dynamic NMR problem. Here we discuss observables for the weakly-coupled spin system AX as a result of calculating by means of the product operator formalism. There are five different combinations of pulses in the MUSLE-technique:
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It was shown that the use of the MUSLE leads to a substantial simplification of 2D spectra and, hence, greatly facilitates the interpretation of the spectral pattern, allowing the study of the chemical processes and spin exchanges by monitoring the dynamic behavior of the multiplet structure of a nucleus scalar coupled with an unobserved nucleus involved in exchange. The MUSLE experiment can be easily extended to the case of three or more spin systems.

1. Y.E.Chernysh, G.S.Borodkin, Lukyanov et al. Selective Fourier NMR Spectroscopy and it applications for investigation of molecular dynamics processes. Rostov-on-Don, 2002.