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Unformatted text preview: magnetically different carbons are in the structure. (2) The splitting of a resonance indicates how many hydrogens are attached to that carbon. (The splittings may be eliminated by running proton-decoupled spectra. See below.) (3) The chemical shift reflects the hybridization of the carbon: sp 3 , sp 2 , sp. (4) The chemical shift is also affected by the electronic environment of the carbon (inductive influences) and other shielding and deshielding effects. (5) Note: the signal intensities in cmr spectroscopy are not related to the relative numbers of the carbons....
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