Abstract

J-resolved at a glance: Passive coupling refocusing-COSY experiments based on a frequency encoding of the sample along two directions of space are presented. It allows various spin evolutions to be triggered in different parts of the sample in a selective and fully controlled manner. This yields 2D spectra in which the whole proton network appears as a series of fully resolved and straightforwardly assignable doublets, triplets or quartets (see figure).

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