Homework Answers
4. a) Two signals Predicted, one proton comes at 2.01ppm (Multiplet) and another Nine proton comes at 0.86 ppm (Doublet).
b) Four signals Predicted Three proton comes at 2.3 ppm
(Singlet) another three types proton comes in between 7.45 to
7.70ppm looks like Multiplet.
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II. Number of Signals 2. Predict the number of unique protons that would generate peaks in...
II. Number of Signals 2. Predict the number of unique protons that would generate peaks in an NMR spectrum. Look at...
II. Number of Signals 2. Predict the number of unique protons that would generate peaks in an NMR spectrum. Look at Figure 13.6 and example problem 13.2 for guidance. Then for each of these unique proton signals, predict the ppm range where you would find it and the integration value or signal area. Look at figure 13.7 in your textbook. Finally, determine the splitting pattern (multiplicity) of the signal. This is predicted using the n+1 rule. Watch the video for...
II. Number of Signals 2. Predict the number of unique protons that would generate peaks in an NMR spectrum. Look at...
II. Number of Signals 2. Predict the number of unique protons that would generate peaks in an NMR spectrum. Look at Figure 13.6 and example problem 13.2 for guidance. Then for each of these unique proton signals, predict the ppm range where you would find it and the integration value or signal area. Look at figure 13.7 in your textbook. Finally, determine the splitting pattern (multiplicity) of the signal. This is predicted using the n+1 rule. Watch the video for...
II. Number of Signals 2. Predict the number of unique protons that would generate peaks in...
II. Number of Signals 2. Predict the number of unique protons that would generate peaks in an NMR spectrum. Look at Figure 13.6 and example problem 13.2 for guidance. Then for each of these unique proton signals, predict the ppm range where you would find it and the integration value or signal area. Look at figure 13.7 in your textbook. Finally, determine the splitting pattern (multiplicity) of the signal. This is predicted using the n+1 rule. Watch the video for...
1. Interpreting the Table 1. For the following exercise, reference Figure 13.8 in your textbook or...
1. Interpreting the Table 1. For the following exercise, reference Figure 13.8 in your textbook or e-book, and watch the video for that figure in the e-book, For each labelled proton, indicate the ppm range you would expect to find it in for an NMR spectrum. Don't over-think it, just use the chart at this point (Note: In many cases, especially in biochemistry, there will be many complicating factors - here we are just looking at the simple model). CH...
For the protons labeled Ha and Hb in the structure below, predict the characteristics of their...
For the protons labeled Ha and Hb in the structure below, predict the characteristics of their signals in the H NMR spectrum: the approximate chemical shift, the splitting pattern, and the integration value of their signals. Approximate Integration Splitting chemical shift value O 1H H NMR signal O 1 ppm O singlet for H O doublet O 2H 2 ppm O 3H O 3-4 ppm O triplet Br O 4H O 5-6 ppm O quartet O 5H O 7-8 ppm...
4. Consider the following two diastercomers: Both compounds generate 'H NMR spectra with the following signals:...
4. Consider the following two diastercomers: Both compounds generate 'H NMR spectra with the following signals: A multiplet between 7.20-7.63 ppm with an integration of 5H Two separate doublets between 5.70-6.50 ppm, each with an integration of 1H A singlet around 1.30 ppm with an integration of 9H Despite the similarities, how could you differentiate between the H NMR spectra of these isomers? 5. Assign each set of protons to their appropriate signals in the 'H NMR spectrum shown below....
For the protons labeled Ha and Ho in the structure below, predict the characteristics of their...
For the protons labeled Ha and Ho in the structure below, predict the characteristics of their signals in the H NMR spectrum: the approximate chemical shift, the splitting pattern, and the integration value Approximate chemical shift Splitting Integration value O 1H O 2H 03H O 4H H NMR signal1 ppm for Ha O 2 ppm O 3-4 ppm O 5-6 ppm O 7-8 ppm O singlet O doublet O triplet O quartet O septet O multiplet O 6H H NMR...
PART 1 - For the following compounds A. Predict how many signals would be detected in...
PART 1 - For the following compounds A. Predict how many signals would be detected in the expected 'H NMR spectrum. B. Label proton groups and determine their multiplicity. c. Predict the chemical shifts of each signal in the expected 'H NMR spectrum of the following compounds from the correlation chart in the last page. <Example> Number of signals O Proton groups Multiplicity Triplet B Multiplet (sextet) c Triplet D Singlet Chemical Shirt (ppm) 0.8-1.0 1.2 - 1.5 3.2 4.0...
The signals in the 1H NMR spectrum of butanoic acid are labelled from A to D....
The signals in the 1H NMR spectrum of butanoic acid are labelled from A to D. Considering the spectrum, answer the questions below: [4 marks] Complete the table: Signal Chemical shift, δ (ppm) Splitting pattern (singlet, doublet, triplet, quartet, pentet, sixtet, septet, octet, nonet, multiplet) # of H neighbours Integration (# of protons) Circle or highlight the proton(s) that give rise to this signal A 11.60 CH3CH2CH2COOH B 2.35 CH3CH2CH2COOH C 1.68 CH3CH2CH2COOH D 0.98 CH3CH2CH2COOH [2 marks] Compare this...
PART 3 For each set of data on pages 5-9, calculate and record the degree of...
PART 3 For each set of data on pages 5-9, calculate and record the degree of unsaturation. Then use your problem solving skills to determine the chemical structure that is consistent with ALL of the data on each page. You are not required to label the spectra (but feel free to do so). This entire assignment is to be completed independently Suggestion for a general method to determine a chemical structure based on the provided molecular formula, IR, H-NMR and...
II. Number of Signals 2. Predict the number of unique protons that would generate peaks in an NMR spectrum. Look at Figure 13.6 and example problem 13.2 for guidance. Then for each of these unique proton signals, predict the ppm range where you would find it and the integration value or signal area. Look at figure 13.7 in your textbook. Finally, determine the splitting pattern (multiplicity) of the signal. This is predicted using the n+1 rule. Watch the video for...
II. Number of Signals 2. Predict the number of unique protons that would generate peaks in an NMR spectrum. Look at Figure 13.6 and example problem 13.2 for guidance. Then for each of these unique proton signals, predict the ppm range where you would find it and the integration value or signal area. Look at figure 13.7 in your textbook. Finally, determine the splitting pattern (multiplicity) of the signal. This is predicted using the n+1 rule. Watch the video for...
II. Number of Signals 2. Predict the number of unique protons that would generate peaks in an NMR spectrum. Look at Figure 13.6 and example problem 13.2 for guidance. Then for each of these unique proton signals, predict the ppm range where you would find it and the integration value or signal area. Look at figure 13.7 in your textbook. Finally, determine the splitting pattern (multiplicity) of the signal. This is predicted using the n+1 rule. Watch the video for...
1. Interpreting the Table 1. For the following exercise, reference Figure 13.8 in your textbook or e-book, and watch the video for that figure in the e-book, For each labelled proton, indicate the ppm range you would expect to find it in for an NMR spectrum. Don't over-think it, just use the chart at this point (Note: In many cases, especially in biochemistry, there will be many complicating factors - here we are just looking at the simple model). CH...
For the protons labeled Ha and Hb in the structure below, predict the characteristics of their signals in the H NMR spectrum: the approximate chemical shift, the splitting pattern, and the integration value of their signals. Approximate Integration Splitting chemical shift value O 1H H NMR signal O 1 ppm O singlet for H O doublet O 2H 2 ppm O 3H O 3-4 ppm O triplet Br O 4H O 5-6 ppm O quartet O 5H O 7-8 ppm...
4. Consider the following two diastercomers: Both compounds generate 'H NMR spectra with the following signals: A multiplet between 7.20-7.63 ppm with an integration of 5H Two separate doublets between 5.70-6.50 ppm, each with an integration of 1H A singlet around 1.30 ppm with an integration of 9H Despite the similarities, how could you differentiate between the H NMR spectra of these isomers? 5. Assign each set of protons to their appropriate signals in the 'H NMR spectrum shown below....
For the protons labeled Ha and Ho in the structure below, predict the characteristics of their signals in the H NMR spectrum: the approximate chemical shift, the splitting pattern, and the integration value Approximate chemical shift Splitting Integration value O 1H O 2H 03H O 4H H NMR signal1 ppm for Ha O 2 ppm O 3-4 ppm O 5-6 ppm O 7-8 ppm O singlet O doublet O triplet O quartet O septet O multiplet O 6H H NMR...
PART 1 - For the following compounds A. Predict how many signals would be detected in the expected 'H NMR spectrum. B. Label proton groups and determine their multiplicity. c. Predict the chemical shifts of each signal in the expected 'H NMR spectrum of the following compounds from the correlation chart in the last page. <Example> Number of signals O Proton groups Multiplicity Triplet B Multiplet (sextet) c Triplet D Singlet Chemical Shirt (ppm) 0.8-1.0 1.2 - 1.5 3.2 4.0...
PART 3 For each set of data on pages 5-9, calculate and record the degree of unsaturation. Then use your problem solving skills to determine the chemical structure that is consistent with ALL of the data on each page. You are not required to label the spectra (but feel free to do so). This entire assignment is to be completed independently Suggestion for a general method to determine a chemical structure based on the provided molecular formula, IR, H-NMR and...
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