HH COSY geminal, vicinal, -relationships of protons

The HH COSY experiment in proton magnetic resonance is a quick alternative to spin 

This example (Fig. 2.10) also shows the limitations of the ////COSY experiment first, evaluation, without taking known shifts and possible couplings into account, is not always conclusive because the cross-sectional area of the cross signals may not reveal which specific couplings are involved second, overlapping signals (e.g. = 7.JJ and 7.60 in Fig. 2.10) are not separated by HH COSY 

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