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Question 7 4 The 'H-NMR spectrum of which compound is shown below? Ethyl benzoate 4-t-butylphenol 1,2-dimethylbenzene...
A compound has the 'H NMR spectrum shown below. Identify the compound. 11 10 9 00 7 6 UI 4 3 2 1 O None of these compounds fit the spectrum that is shown here. CN O Me H A compound has the 'H NMR spectrum shown below. Identify the compound. 3H triplet 2H triplet 2H 11 10 9 00 7 0) 5 4 3 N 1 0 None of these compounds fit the spectrum that is shown here. A...
4. The H NMR spectrum shown below is for a compound with the formula CgHi9lN a) Determine the lOU for the compound b) Propose a structure for the compound c) Assign all H NMR signals to the hydrogens in your structure 6H 4H 4H 4H 1H
A compound has the H NMR spectrum shown below. Identify the compound 10 6 4 3 2 0 CHCl3 CH2Cl2 None of the compounds fit the spectrum that is shown here.
6. The 'H NMR spectrum of a compound with molecular formular CaH10O is shown below. Determine the structure of the compound and assign the 'H NMR signals. 4 2
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...
2. A compound (C4H100) whose 'H NMR spectrum is shown below. a. Propose a structure for this compound. b. Make peak assignments, showing which protons give rise to the absorptions in the spectrum. 2 6.00 2.12 102 7.90 1 36 an 25 2n 10 nnn ma
A compound has the 1H NMR spectrum shown below. Identify the
compound.
A compound has the 1H NMR spectrum shown below, Identify the compound 10 9 87654 3210 MeO None of these compounds is consistent with the spectrum that is shown here. HO
4. Below is a plot of the variable-temperature 31P{H} NMR spectrum of the compound shown below. a) What are two possible structures for the species that give rise to the two signals? b) Why do the signals coalesce at elevated temperatures? HN. | 0 - Ph. HN-P-O-ěron Me 363K 353K 343K 333K 323K 313K 303K 293K 5.0 5 5 .0 55.0 5.5
The proton NMR spectrum for a compound with the formula C,H,O, is shown below along with the spectral data in tabular form. (It may be necessary to expand (zoom) some of the 'H signals to view spin-spin splitting details.) This compound exhibits strong infrared absorption at 1727 and 1195 em plus a medium intensity band at 1637 cm! 13C NMR Data 'H NMR Data Proton Shift Relative Area Normal Carbon DEPT-135 DEPT-90 14.2 Positive No peak 60.4 Negative No peak...
4. (4 points) Which of the structures shown below is consistent with its H-NMR spectrum? (formula = C9H110Br) 1 = multiplet 2 = multiplet 3 multiplet 4 triplet 5 - triplet 6 = quintet 11 TTTTTTTTTTT 10 9 8 7 6 5 3 2 ppm