COSY

COSY_vs_TOCSY_example_2

The 2D TOCSY Experiment

The 2D TOCSY (TOtal Correlation SpectroscopY) experiment is a useful complement to the more familiar COSY experiment. Whereas COSY typically establishes correlations between protons over two to three chemical bonds, TOCSY can provide correlations between all the protons that make up a “spin system”. This ability of TOCSY helps identify discrete building blocks within a …

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