C/H correlation

Organic compounds almost always contain carbon and hydrogen, so that the C,H correlation is a key experiment in every structural determination. This experiment tells us which carbon signal corresponds to which proton signal, and the result for model compound 1 is shown in Fig. 27. 

Fig. 27 C,H correlation spectrum for compound 1 (set for directly bonded hydrogens, 200 MHz, 5% in CDC13, measurement time 60 min, inverse detection)...

Problems 292 - 309 are a graded series of exercises in two-dimensional NMR (COSY, NOESY, C-H Correlation and TOCSY) ranging from very simple examples to demonstrate each of the techniques to complex examples where a combination of 2D methods is used to establish structure and distinguish between stereoisomers. 

C2), 23.6 (C3) and 13.0 (C4) ppm. On the facing page produce a schematic diagram of the COSY the C-H correlation spectra for this molecule showing where all of the cross peaks and diagonal peaks would be. 

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