Propose a structure for a compound that has the chemical formula C5H10O2 and has the following 1H NMR spectrum. Proton NMR 1 画 Ч 6 3 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 Chemical Shift (ppm)
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- Propose a structural formula for the analgesic phenacetin, molecular formula C10H13NO2, based on its 1H-NMR spectrum.Deduce the structure of a compound with the molecular formula C9H12 that produces the following 'H NMR spectrum: 00 Proton NMR LO 7 6 5 4 Septet 1 Doublet 6 3 2 1 0 Chemical Shift (ppm)Determine the structure of the compound C6H100 whose 'H NMR spectrum is shown here. C6H100 6.5 25 7 6 3 1 Chemical shift (ppm)
- The following NMR spectra were obtained from a compound with the molecular formula C4H6O. Use this information to predict its structure.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 PPMPropose a structure for a compound with molecular formula C3H180 that exhibits the following 'H NMR and 13C NMR spectra: Proton NMR 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 Chemical shift (ppm) Carbon NMR -70.5 31.6 19.3 13.7 70 60 50 40 30 20 10 Chemical shift (ppm)
- Use the 1H-NMRs to determine the structure for the compound with formula: C4H10OAn organic compound with molecular formula C4H8O2 has the following nmr values. Propose the structure of the compound? Shift (ppm) Area 4.13 2.05 quartet 2.02 3.04 singlet 1.15 3.00 tripletA compound with molecular formula C5H10O2has the following NMR spectrum. Determine the number of protons giving rise to the signals at 2.0 ppm and 4.0 ppm.
- Can I have help with this question?Following are the 'H and 13C NMR spectra for each of three isomeric ketones with formula C7H14O. Determine a structure to each pair of spectra and assign each H and C. Carbon spectrum А C,H140 Carbon spectrum В C;H140 CDCI3 200 150 100 50 Proton spectrum CDC13 A C,H140 200 150 100 50 1.96 2.00 2.91 3.0 2.5 2.0 1.5 1.0 0.5 0.0 211.04 -44.79 –17.39 – 13.78 -218.40 - 38.85 –18.55A compound with the molecular formula C5H₁002 has the following ¹H NMR spectrum: Proton NMR 5.0 4.5 4.0 3.5 3.0 2.5 6.33 Integration Values 19.4 37.9 Determine the number of proton(s) giving rise to the signal at 5 ppm. 0000 10 3 6 1 2.0 1.5 1.0 4 0.5 ppm