NMR Experiment A Spectroscopy I Pre lab Assignment Place your responses to each of the following questions in the appropriate boxes on the Spectroscopy I Pre lab Answer Sheet The Pre lab Answer Sheet is due when you arrive in lab to do the Spectroscopy I lab You do not need to turn in this sheet with your answers 1 Give the number of degrees of unsaturation DOU for each of the following compounds N a C9H12O N d b C6HCl5O NH2 N c N H e N N 2 For each of the following compounds give the number of signals resonances that you would expect to find in the 1H NMR spectrum Br S a c O b d OH H 3 For each of the following compounds give the multiplicity s d t etc and the number of protons relative integrations for each type of proton indicated Be sure to give the integration value for the entire set of protons that are of the type indicated b d O Cl O a c e 4 Assign the given 1H NMR chemical shifts for each of the following compounds to the appropriate sets of protons as indicated i b a O Br O Cl Cl Cl 4 0 5 8 ppm cdef g 1 0 1 7 1 8 4 1 ppm h 1 0 2 3 3 6 ppm 5 Many molecular fragments have easily identifiable coupling patterns by 1H NMR Match the following molecular fragments with the correct spectrum shown below HC a H2 C b H2 C C H2 CH3 c d 1 3 2 4 C H2 CH3 HC CH3
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