16.64 Which of the two 13C NMR spectra below corresponds to chlorocyclohexane and which corresponds to iodocyclohexane? Explain. 200 150 100 50 200 150 100 50 Chemical shift (ppm) Chemical shift (ppm)
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A: The structure of the unknown compound of molecular formula C8H8O3 is shown below:
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Q: Which of the diethylbenzene isomers (ortho, meta, or para) correspondsto each set of 13C NMR…
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Q: CH3 CH3 Н—с—н CCI3-C- II -ċ-CH3 —с—он H3C- I III CH3 CH3 12 10 6 PPM 8 4
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Q: 1.48 147 1.00 3.652 2.276 2.256 2.146 2.130 1.253 1.243 1.233 1.125 1.113 1.005 E66'0 9260 000'0 P.
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- Which of the diethylbenzene isomers (ortho, meta, or para) corresponds to each set of 13C NMR spectral data?[A] 13C NMR signals: 16, 29, 125, 127.5, 128.4, and 144 ppm[B] 13C NMR signals: 15, 26, 126, 128, and 142 ppm[C] 13C NMR signals: 16, 29, 128, and 141 ppmThe 'H NMR chemical shifts of nitromethane, dinitromethane, and trinitromethane are at 8 6.10, 8 4.33, and 8 7.52. Match each chemical shift with the compound. Explain how chemical shift correlates with pK.Compound A has molecular formula C7H7X. Its ¹H-NMR spectrum shows a singlet at 2.26 ppm and two doublets, one at 6.95 ppm and one at 7.28 ppm. The singlet has an integral of three and the doublets each have an integral of two. Its 13C- NMR shows five signals. The mass spectrum of A shows a peak at m/z 170 and another peak at m/z = 172; the relative height of the two peaks is 1:1 respectively. - Identify what atom X is, explaining your reasoning - Identify Compound A, explaining your reasoning Compound A is treated with a mixture of nitric and sulfuric acids to generate Compound B. The ¹H-NMR spectrum of B shows two singlets, one at 2.52 pm and one at 8.13 ppm. The 13C-NMR spectrum of B shows five signals. The mass spectrum of B shows a peak at m/z = 260 and another peak at m/z = 262; the relative height of the two peaks is 1:1 respectively. - Identify compound B, explaining your reasoning Compound B is treated with sodium ethoxide to generate compound C. The ¹H-NMR spectrum of C shows…
- Identify the carbon atoms that give rise to the signals in the 13C NMR spectrum of each compound. a.CH3CH2CH2CH2OH; 13C NMR: 14, 19, 35, and 62 ppm b.(CH3)2CHCHO; 13C NMR: 16, 41, and 205 ppm c.CH2=CHCH(OH)CH3; 13C NMR: 23, 69, 113, and 143 ppmCompound A has molecular formula C7H7X. Its 1H-NMR spectrum shows a singlet at 2.26 ppm and two doublets, one at 6.95 ppm and one at 7.28 ppm. The singlet has an integral of three and the doublets each have an integral of two. Its 13C-NMR shows five signals. The mass spectrum of A shows a peak at m/z = 170 and another peak at m/z = 172; the relative height of the two peaks is 1:1 respectively. - Identify what atom X is, explaining your reasoning - Identify Compound A, explaining your reasoning Compound A is treated with a mixture of nitric and sulfuric acids to generate Compound B. The 1H-NMR spectrum of B shows two singlets, one at 2.52 pm and one at 8.13 ppm. The 13C-NMR spectrum of B shows five signals. The mass spectrum of B shows a peak at m/z = 260 and another peak at m/z = 262; the relative height of the two peaks is 1:1 respectively. - Identify compound B, explaining your reasoning Compound B is treated with sodium ethoxide to generate compound C. The 1H-NMR spectrum of C shows…What is the structure of a compound of molecular formula C1H1402 that shows a strong IR absorption at 3150-2850 cm1 and gives the following 'H NMR absorptions: 1.4 (triplet, 6 H), 4.0 (quartet, 4 H), and 6.8 (singlet, 4 H) ppm?
- Identify the carbon atoms that give rise to the signals in the 13C NMR spectrum of each compound.a. CH3CH2CH2CH2OH; 13C NMR: 14, 19, 35, and 62 ppmb. (CH3)2CHCHO; 13C NMR: 16, 41, and 205 ppmc. CH2 = CHCH(OH)CH3; 13C NMR: 23, 69, 113, and 143 ppmHow many 1H NMR signals does each compound give?Explain why the carbonyl carbon of an aldehyde or ketone absorbs farther downeld than the carbonyl carbon of an ester in a 13C NMR spectrum.