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COSY dipeptide

Observing Spin Systems using COSY

COSY (Correlated Spectroscopy) is a 2D homonuclear (1H, 1H)-correlated NMR experiment that allows coupling proton partners to be identified. For many molecules, proton coupling is directly related to the carbon skeleton connectivity and therefore COSY is one of the most useful 2D NMR experiments.

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Homonuclear J-resolved Spectroscopy (JRES): An Educational Tool

Many undergraduates that have been introduced to NMR understand the concepts of chemical shift and coupling, however struggle when presented with a real 1H NMR spectrum. For a novice at interpreting proton NMR spectra, it can be difficult to distinguish between separate resonances and multiplets belonging to the same resonance. ‘JRES’ is a 2D homonuclear …

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