6. The 'H-NMR spectra shown below correspond to a compound of general forma C D 2H...
4) The 1H-NMR spectra shown below correspond to a compound of general formula CH,Br. Propose a plausible structure for this compound. a) Explain the multiplicity and the chemical shift of each signal b) Indicate in each signal how you would calculate the coupling constants (5). Give an approximate value (range) for each of the expected ) values c) Indicate the 'H coupling showing the above-indicated J values ? -3.31 2.01 1.00 6.03
1H NMR spectra C through F (shown below) correspond to four isomeric alcohols with the molecular formula of C5H12O. Please propose a suitable structure for each spectrum and assign the 1H NMR signals for each Hs in the molecule. 1H NMR spectra C through F (shown below) correspond to four isomeric alcohols with the molecular formula of C5H12O. Please propose a suitable structure for each spectrum and assign the 1H NMR signals for each Hs in the molecule.
Please give the structure based on the NMR spectra depicted. Compound G: Molecular formula = C9H12. Key Infrared signal: 3082, 749, 699 cm 5H, m 3H, t 2H, sextet 2H, t 10 Heoe-ese Pprn Draw your final in this box. Compound H: Molecular formula C$H10O. Infrared signal: 2874, 2719, 1726 cm 3H, t 9-10 2H, 2H, t udd sextet 1H, singlet 2H, pentet 1.5 2.0 1.0 PPM 3.0 t0 5 10.0 9 9.0 8.5 8.0 7.5 7.0 6.5 PPM Draw...
Below is the H NMR spectra for the molecule styrene. Consider if a hydroboration reaction was preformed on styrene. How would the H NMR of the expected product change in comparison to styrene? Circle which peaks from the styrene spectra would disappear and not be present in the NMR of the product. Draw the expected product. Describe the splitting pattern of each new proton signal that would appear in the NMR of the product. 2) Below is the 'H NMR...
4) All signals in the 'H NMR below correspond to particular hydrogens in the molecule. Assign the NMR spectrum by labeling each proton in the molecule with the appropriate lettered signal. OMe 3H, S HO 3H, S 4H, m 1H, s 1H, br PPM 6H, d 3H, d 2H, S 3H, m 1H, q1H, sept PPM
3. Determine the structure for the compound with formula C H15BrO from the given NMR spectra. Use an inverted tree diagram to determine the coupling for the signals at 2.75 and 3.05 ppm. The compound shows a signal at 1705 cm' in the IR. (20 pts 6H ЗН 2H 1H 1H 1H 1H PPM
The 1H-NMR spectrum of ethanol (CH3CH2OH) is shown below. Assign each signal to the protons it corresponds to in the molecule. Explain the splitting pattern observed for each signal. CH2CH2OH 0 2 4 5 7 8 (ppm)
V. Draw the structures of Compound 23A (6 pts), Compound 23B (6 pts) and clearly indicate your assignments of all proton resonances using the lower case letter associated with the signal (6 pts). Calculate the Unsaturation Index of each compound (2 pts) (20 points total) 1.24 3.0 1.26 2.5 e = 1.25 ppm doublet, 6H 2.0 a = 10.0 ppm 1.5 Compound 23a: C10H420 singlet, 1H 10.00 7.83 7.85 7.09 7.07 1.0 Unsat. Index = (2C+2-H-X+N)/2 = X=number of halogens...
V. Draw the structures of Compound 23A (6 pts), Compound 23B (6 pts) and clearly indicate your assignments of all proton resonances using the lower case letter associated with the signal (6 pts). Calculate the Unsaturation Index of each compound (2 pts) (20 points total) 1.24 3.0 1.26 2.5 e = 1.25 ppm doublet, 6H 2.0 a = 10.0 ppm 1.5 Compound 23a: C10H420 singlet, 1H 10.00 7.83 7.85 7.09 7.07 1.0 Unsat. Index = (2C+2-H-X+N)/2 = X=number of halogens...
The H-NMR spectrum of an unknown compound (formula CaHgO2) is shown below. Draw the structure of the unknown compound. Question 5 4 1 6 5 8 10 11 Ppm The 13C-NMR spectrum of an unknown compound (formula CgH180) is shown below. Its 1H-NMR spectrum only shows one singlet at 1.2 ppm. Draw the structure of this unknown compound. uestion 2 220 200 160 140 120 PPM 100 80 240 180 60 40 20 Create OscerSketch Answer 2 What would be...