(a) C4H,CIO IR: 1810 cm-1 TMS 10 8. O ppm Desplazamiento químico (8) (b) C5H;NO2 IR: 2250, 1735 cm-1 TMS 10 9. 8. 7 5 3. 2 1 O ppm Desplazamiento químico (8) Intensidad Intensidad

Identify the following spectra. Full credit is only given if all pertinent peaks are assigned on the spectrum (~5-6 peaks). Label the peaks on the spectrum and place the structure of the compound in the box on the lower left-hand corner of the spectrum (from the table below, no numbering scheme).It is highly advisable to use the tables provided in the infrared handout and lectureto avoid confusion caused by tables from different sources. You do not have to indicate the exact wavenumber of the peak.

Based on the spectra provided, draw the structure. Label each unique carbon and hydrogen with the letters A, B, C… for use in assigning NMR peaks. fill in the data table assigning peaks in each spectrum. You should assign: • All 1H NMR peaks • Significant IR peaks above 1600 cm Example of what the table should include (imagine the structure of ethanol is drawn with the CH3 hydrogens labeled as A, the CH2 hydrogens labeled as B, and the OH hydrogen labeled as C) :  hydrogen proton chemical shift  integration splitting pattern couples to.. A 1.2 3 triplet B B 3.7 2 quartet A C 2.6 1 singlet -

Assign structures to thefollowing compounds(A, B, C, andD) on the basis of themolecular formulas and spectra given. You will haveto determine therelative ratio ofthe protons from the integration curve shown for each peak.