11. The proton NMR spectrum for a compound with formula C,H3O is shown below. The normal carbon-13 NMR spectrum has five peaks. The infrared spectrum has a strong band at 1746 cm. The DEPT-135 and DEPT-90 spectral results are tabulated. Draw the structure of this compound. Normal Carbon DEPT-135 DEPT-90 44ppm No peak ( Positive Cn Negative 125 Positive 127 Positive Positive CA 138 No peak No peak ce 215 No peak No peak Proton spectrum C,H3O 4.10 0.5 0.0 4.14 1.0 15 2.0 2.5 3.0 3.5

v Instructions Question 18 What is the correct assignment in the number of peaks in the H NMR spectra of th Br Br Br Br Br Br II II O I = 3 signals; II = 2 signals; III = 3 signals. O I = 4 signals; II = 4 signals; III = 4 signals. O I = 2 signals; II = 3 signals; III = 1 signals. O I = 3 signals; II = 3 signals: III = 2 signals. • Previous

A compound with the molecular formula C4H₁1N has the following ¹H NMR spectrum, in which the relative integration values are illustrated with step curves. Which of the following is the correct number of protons giving rise to each signal? al O2H, 3H, 6H Ο 1Η, 4Η, 6Η O 2H, 4H, 5H O 3H, 4H, 5H PPM

how many peaks would you expect to see in the 13C NMR spectrum of this substance ?

Interpret the NMR spectrum and give the final structure of the compound 10 C,H,Br M.Wt = 171 9 - 8 217 22 T 6 5 сл ppm 4 3 3 N 1 0

Below is the ¹H NMR spectrum of a constitutional (structural) isomer of C9H100, with the integration given above each peak. In addition to other peaks not given here, the IR spectrum of the isomer showed a strong peak at 1700 cm-1 Determine which of the structures given below the spectrum matches the 1H NMR spectrum. H3C 5 A C CH3 CH3 HO B D PPM CH3 CH ₂ 2 FM N 3

For the protons labeled Hª and Hb in the structure, predict the characteristics of their signals in the ¹H NMR spectrum: the approximate chemical shift, the splitting pattern, and the integration value. Ha a TOT a нь Нь X

Please solve this

Describe the 1H NMR spectrum you would expect , indicating the relative positions of the signals:

Name 4 chemical chifts, their multiplicity and their assignments using the following NMR shift.