Answer Happy

Problem 4: (10 points) Determine the correct structure for the unknowns based on the various spectroscopy data provided (IR, 'H-NMR, and C-NMR data), the molecular formula and the degree of unsaturation. Give evidence from the spectra and the DoU of the formula for why it is that structure for full credit Table of Possible Structures for Your Unknown: Br. Br Unknown #1 Unknown #2 Unknown #3 Unknown #4 ОН ost you u Xoh on Br Unknown #5 Unknown #8 Unknown #6 Unknown #7 IR Spectrum of Your Unknown: my m w 1000 300 4000 3000 2000 1500 Wavember (cm)

H-NMR Spectrum of Your Unknown: B (singlet) с (triplet) E D (sextet) P 2 12 N 10 8 PPM C-13 NMR Spectrum of Your Unknown: 40 80 60 20 140 180 160 120 100 PPM

Draw the structure of the unknown you believe you have below, and identify all chemically equivalent protons as Ha, Hb, etc. Then, assign them to the appropriate 'H-NMR peaks in the corresponding spectrum above. What is your Unknown Sample (i.e. Unknown #1, etc.)?