Analyzing a Proton NMR Spectrum

This compound will have the same HDI as a compound with molecular formula C5H10. To he fully saturated, 5 carhon atoms would require (5 X 2) + 2 = 12 H s. According to our calculation, two hydrogen atoms are missing, and, therefore, this compound has one degree of unsaturation. HDI = 1. 

With one degree of unsaturation, the compound must contain either one ring or one double bond, but not both. The compound cannot have a triple bond, as this would require two degrees of unsaturation. 

PROBLEMS Calculate the degree of unsaturation for each of the following molecular formulas 2.36 C6H10O4 2.37 C7H11N 2.38 CsHmOz 

Consider the number of signals and integration of each signal (this gives clues about the symmetry of the compound). 

Analyze each signal (chemical shift, integration, and multiplicity), and then draw fragments consistent with each signal. These fragments become our puzzle pieces that must be assembled to produce a molecular structure. 

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