Prediction of Integrals and Intensities

We can predict how a resonance from a single atomic site will be split by I-coupling into a multiplet. We do this by considering what other NMR-active spins are two and three bonds away from the atom in question. That is, we use J s and J s. In special cases, we may have a molecule in which we expect to observe a I as a result of an alignment of bonds in a planar or nearly planar conformation that looks 

Once multiplicities have been predicted for each resonance, we examine our list to look for unique multiplicities. We may be able to identify some of our resonances simply on the basis of the observed couplings in the 1-D spectrum. 

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