Homework Answers
Solution:
The number of non-equivalent protons, integration and multiplicity of each peak are given below. They are given by the numbering from a to e.
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MR spectra: For the following molecules, provide the following information that you would expect for their...
(6 points) Predict the number of signals you would expect each of the molecules below to...
(6 points) Predict the number of signals you would expect each of the molecules below to show on their correspondingC NMR spectra and 'H NMR spectra. 5. C signals 'H signals CH a. Н,С— с— сн, T CH3 b. C.
'HNMR - Problem Set-3 How would you distinguish between the compounds in each of the following...
'HNMR - Problem Set-3 How would you distinguish between the compounds in each of the following pairs by 'H NMR? a. CH CH2CH2OCH; and CH3CH2OCH2CH3 b. BrCH CH CH Br and BrCH2CH2CH NO2 CH3 CH3 c. CH:CH-CHCH; and CH3 CH CH CH3 CH CH d. CH3-C-C-OCH; CH OCH and CH3-C-CH; OCH e. H3C CH; -C-CH3 CH; and -CHỤCCH CH 'HNMR-Problem Set-3 (Page 1 of 2) Name Write the structural formula for each of the following compounds from the 'H NMR...
How many signals would you expect each of the following molecules to have in its 'H...
How many signals would you expect each of the following molecules to have in its 'H and 1C spectra? Molecule #1 Molecule #3 Molecule #2 НэС CHз CH3CH2C(CH3)2CH2CH3 H-NMR absorptions absorptions absorptions 3C-NMR absorptions 13 | absorptions absorptions
How many signals would you expect each of the following molecules to have in its 'H and 1C spectra? Molecule #1 Molecule #3 Molecule #2 НэС CHз CH3CH2C(CH3)2CH2CH3 H-NMR absorptions absorptions absorptions 3C-NMR absorptions 13 | absorptions absorptions
10. (8 points) For each of the following molecules predict the "C and 'H NMR spectra....
10. (8 points) For each of the following molecules predict the "C and 'H NMR spectra. For the "C NMR predict the number of peaks and the shift. For the 'H NMR you will need to predict the shift, multiplicity, and integration of the peaks. CH3 HC не ең, H₃C =O % b-CH3 11. (6 points) Propose a structure for a compound with the chemical formula C.H.Cl, that fits the following 1H NMR data 2.18 8 (3H, singlet) 4.16 8...
Draw the 1H NMR spectra you would expect for the following compound. Note that you must...
Draw the 1H NMR spectra you would expect for the following
compound. Note that you must put the peaks at the proper range of
chemical shift, with proper integral labeled below the peak, and
the proper spin-spin splitting.
CHM 2440 (FA 2013) 8 (ppm) Label the NON-equivalent H's: H3CO Moco WACH NHCH3 Label of H's chemical shift integral spin-spin splitting 8 (ppm)
please provide the STRUCTURE from this spectrum 6. The following three IR spectra are for constitutional isomers o...
please provide the STRUCTURE from this spectrum
6. The following three IR spectra are for constitutional isomers of alkenes with molecular formula CsH10 that are shown below. Please select the alkene that corresponds to the IR spectrum using the bending vibrations (which are listed on page 17 of this manual). Alkenes: HH CHCH CH CH3 CH3CH2CH3 CH3 H CH.CH CH,CHCH H CH HH We were unable to transcribe this image
Question 5 [time = 15 minutes] (a) How many lines would you expect for the EPR...
Question 5 [time = 15 minutes] (a) How many lines would you expect for the EPR spectra of radicals A-C? H OCD3 H OCH3 Нас Hас OCD3 CH2CH3 (b) One of the two diastereomers of 2,6-dimethylcyclohexyl benzylether shown below exhibits two doublets for the benzylic protons (geminal coupling) in the H NMR spectrum нн 2J Draw the isomer clearly showing the relative configuration of the stereocentres. (ii) Provide a brief explanation for this finding. (iii) What signal (s) would you...
2. Which of the following compounds would be expected to show spin-spin splitting in their 'H NMR spectra? (Check the a...
2. Which of the following compounds would be expected to show spin-spin splitting in their 'H NMR spectra? (Check the appropriate Box). No Splitting Splitting Compound cm No Compound Splitting Splitting (CH3)3C-O-CH (CH3)2CH-O-CH3 Br-CH2CH2CH2-Br Br-CH:CH-Br H₂CT , CH₂
1. How many signals would you expect in the 'H and 13C NMR spectra of the following molecules? (For 'H NMR, it may...
1. How many signals would you expect in the 'H and 13C NMR spectra of the following molecules? (For 'H NMR, it may help to draw in all the H atoms.) w TH: TH: 13C: 13C: TH: 13C: Hi TH: TH: 13C: 13C: 13C:
HNMR - Problem Set-3 1. How would you distinguish between the compounds in each of the...
HNMR - Problem Set-3 1. How would you distinguish between the compounds in each of the following pairs by 'H NMR? a. CH3CH2CH2OCH, and CH CH OCH2CH3 b. BICH2CH2CH2Br and BrCH2CH2CH2NO2 CH; CH3 CH3 C. CH:CH-CHCH3 and CH CCH2CH3 CH3 CH3 0 ОСН, d. CH3-C-C-OCHz and CH3-C-CH3 CH3 OCH3 CH3 C-CH3 CH3 CH3 CHCCH e. H3C and CH3
(6 points) Predict the number of signals you would expect each of the molecules below to show on their correspondingC NMR spectra and 'H NMR spectra. 5. C signals 'H signals CH a. Н,С— с— сн, T CH3 b. C.
'HNMR - Problem Set-3 How would you distinguish between the compounds in each of the following pairs by 'H NMR? a. CH CH2CH2OCH; and CH3CH2OCH2CH3 b. BrCH CH CH Br and BrCH2CH2CH NO2 CH3 CH3 c. CH:CH-CHCH; and CH3 CH CH CH3 CH CH d. CH3-C-C-OCH; CH OCH and CH3-C-CH; OCH e. H3C CH; -C-CH3 CH; and -CHỤCCH CH 'HNMR-Problem Set-3 (Page 1 of 2) Name Write the structural formula for each of the following compounds from the 'H NMR...
How many signals would you expect each of the following molecules to have in its 'H and 1C spectra? Molecule #1 Molecule #3 Molecule #2 НэС CHз CH3CH2C(CH3)2CH2CH3 H-NMR absorptions absorptions absorptions 3C-NMR absorptions 13 | absorptions absorptions
How many signals would you expect each of the following molecules to have in its 'H and 1C spectra? Molecule #1 Molecule #3 Molecule #2 НэС CHз CH3CH2C(CH3)2CH2CH3 H-NMR absorptions absorptions absorptions 3C-NMR absorptions 13 | absorptions absorptions
10. (8 points) For each of the following molecules predict the "C and 'H NMR spectra. For the "C NMR predict the number of peaks and the shift. For the 'H NMR you will need to predict the shift, multiplicity, and integration of the peaks. CH3 HC не ең, H₃C =O % b-CH3 11. (6 points) Propose a structure for a compound with the chemical formula C.H.Cl, that fits the following 1H NMR data 2.18 8 (3H, singlet) 4.16 8...
Draw the 1H NMR spectra you would expect for the following
compound. Note that you must put the peaks at the proper range of
chemical shift, with proper integral labeled below the peak, and
the proper spin-spin splitting.
CHM 2440 (FA 2013) 8 (ppm) Label the NON-equivalent H's: H3CO Moco WACH NHCH3 Label of H's chemical shift integral spin-spin splitting 8 (ppm)
please provide the STRUCTURE from this spectrum
6. The following three IR spectra are for constitutional isomers of alkenes with molecular formula CsH10 that are shown below. Please select the alkene that corresponds to the IR spectrum using the bending vibrations (which are listed on page 17 of this manual). Alkenes: HH CHCH CH CH3 CH3CH2CH3 CH3 H CH.CH CH,CHCH H CH HH We were unable to transcribe this image
Question 5 [time = 15 minutes] (a) How many lines would you expect for the EPR spectra of radicals A-C? H OCD3 H OCH3 Нас Hас OCD3 CH2CH3 (b) One of the two diastereomers of 2,6-dimethylcyclohexyl benzylether shown below exhibits two doublets for the benzylic protons (geminal coupling) in the H NMR spectrum нн 2J Draw the isomer clearly showing the relative configuration of the stereocentres. (ii) Provide a brief explanation for this finding. (iii) What signal (s) would you...
2. Which of the following compounds would be expected to show spin-spin splitting in their 'H NMR spectra? (Check the appropriate Box). No Splitting Splitting Compound cm No Compound Splitting Splitting (CH3)3C-O-CH (CH3)2CH-O-CH3 Br-CH2CH2CH2-Br Br-CH:CH-Br H₂CT , CH₂
1. How many signals would you expect in the 'H and 13C NMR spectra of the following molecules? (For 'H NMR, it may help to draw in all the H atoms.) w TH: TH: 13C: 13C: TH: 13C: Hi TH: TH: 13C: 13C: 13C:
HNMR - Problem Set-3 1. How would you distinguish between the compounds in each of the following pairs by 'H NMR? a. CH3CH2CH2OCH, and CH CH OCH2CH3 b. BICH2CH2CH2Br and BrCH2CH2CH2NO2 CH; CH3 CH3 C. CH:CH-CHCH3 and CH CCH2CH3 CH3 CH3 0 ОСН, d. CH3-C-C-OCHz and CH3-C-CH3 CH3 OCH3 CH3 C-CH3 CH3 CH3 CHCCH e. H3C and CH3
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