1. Provide the structure of the compound illustrated in the below H-NMR spectrum. Label the sets of unequivalent hydrogens in your structure. The formula for the structure is C6H10O2.
2. What is the complex splitting pattern for He?
3. Draw the complex splitting pattern for He and label the coupling constants (J).
4. Why is He more downfield than He? Include drawings to support your answer.
Homework Answers
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1. Provide the structure of the compound illustrated in the
below H-NMR spectrum. Label the sets...
8. The 'H NMR spectrum below corresponds to a compound with molecular formula CH1202 Determine the...
8. The 'H NMR spectrum below corresponds to a compound with molecular formula CH1202 Determine the structure, label the unique sets of hydrogens and then use these labels to mark the corresponding signals. (4 pts.) s, 9H s, 2H bs, 1H 10 6 2 P-03-15 ppm
3. Given the 'H NMR spectrum below and a molecular formula of CaH.O, provide a structure....
3. Given the 'H NMR spectrum below and a molecular formula of CaH.O, provide a structure. Note you must assign all of the signals in the spectrum below to receive full credit. IR: 3300 cm (broad) (5 pts.) зн, d Зн, t 2H,t 2H, q 2H, m 1H, bs 1H, m 4 3 2 PPM 4. In the space below, draw a 'H NMR spectrum for each of the following molecules. Note that only one of these will be graded...
H NMR Spectrum: For each signal: 1.) Identify its environment 2.) Identify its spin-spin coupling...
H NMR Spectrum:
For each signal:
1.) Identify its environment
2.) Identify its spin-spin coupling (identify how many protons
are 3 bonds away, causing the coupling)
3.) Identify its integration value
Why is the peak at 6.3 ppm broadened?
Explain why there are 2 doublets in the aromatic region, but 4
aromatic protons on benzocaine
Why is the quartet at ~4.3 ppm so far downfield compared to the
triplet at ~ 1.3 ppm?
What is the purpose of using sulfuric...
1H NMR 6. Propose a structure for the compound CzH.O with the following 'H NMR spectral...
1H NMR 6. Propose a structure for the compound CzH.O with the following 'H NMR spectral data. 2H 1H 3H 1110 H ppm 7. Propose a structure for the compound C2H60, with the following 'H NMR spectral data. (Note this is the same molecular formula as the previous question) ppm 8. Propose a structure for the compound C,He with the following 'H NMR spectral data. SH2H 1H ppm 9. Propose a structure for the compound CxHyN with the following 'H...
The H-NMR spectrum of an unknown compound (formula CaHgO2) is shown below. Draw the structure of...
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...
3. Determine the structure for the compound with formula C H15BrO from the given NMR spectra....
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
Label the IR spectrum for functional groups and identify the correct structure of the compound. Indicate...
Label the IR spectrum for functional groups and identify the
correct structure of the compound. Indicate the peaks on the H1-NMR
to show carbon connectivity and splitting pattern. Calculate the
degree of unsaturation. Draw the correct structure of the compound.
2) Mol wt: 148 g/mol IR spectrum: H1-NMR: 5 H 10 11 ppm 2H 2.H
Draw the structure of compound 2 and label how it lines up with the peaks from the NMR Compound 2 зн 1H 2H 4H 2H 2H 2 PPM Compound 2 зн 1H 2H 4H 2H 2H 2 PPM
Draw the structure of compound 2 and label how it lines up with
the peaks from the NMR
Compound 2 зн 1H 2H 4H 2H 2H 2 PPM
Compound 2 зн 1H 2H 4H 2H 2H 2 PPM
4. Propose a structure for each molecular formula using the provided H NMR spectrum. (a) CH30...
4. Propose a structure for each molecular formula using the provided H NMR spectrum. (a) CH30 6H IH 1H PPM (b) C6H120 ЗН PPM (c) CaHgBr 2H PPM (d) C&H N 2H 2H PPM
1. Given the 'H NMR spectrum below and a molecular formula of CH20, provide a structure....
1. Given the 'H NMR spectrum below and a molecular formula of CH20, provide a structure. Note you must assign all of the signals in the spectrum below to receive full credit. IR: 1600-1650 cm' (multiple peaks) (5 pts.) 3H, S 3H. t 2H, d 2H, d 2H, PPM 2. Given the 'H NMR spectrum below and a molecular formula of CH.0, provide a structure. Note you must assign all of the signals in the spectrum below to receive full...
8. The 'H NMR spectrum below corresponds to a compound with molecular formula CH1202 Determine the structure, label the unique sets of hydrogens and then use these labels to mark the corresponding signals. (4 pts.) s, 9H s, 2H bs, 1H 10 6 2 P-03-15 ppm
3. Given the 'H NMR spectrum below and a molecular formula of CaH.O, provide a structure. Note you must assign all of the signals in the spectrum below to receive full credit. IR: 3300 cm (broad) (5 pts.) зн, d Зн, t 2H,t 2H, q 2H, m 1H, bs 1H, m 4 3 2 PPM 4. In the space below, draw a 'H NMR spectrum for each of the following molecules. Note that only one of these will be graded...
H NMR Spectrum:
For each signal:
1.) Identify its environment
2.) Identify its spin-spin coupling (identify how many protons
are 3 bonds away, causing the coupling)
3.) Identify its integration value
Why is the peak at 6.3 ppm broadened?
Explain why there are 2 doublets in the aromatic region, but 4
aromatic protons on benzocaine
Why is the quartet at ~4.3 ppm so far downfield compared to the
triplet at ~ 1.3 ppm?
What is the purpose of using sulfuric...
1H NMR 6. Propose a structure for the compound CzH.O with the following 'H NMR spectral data. 2H 1H 3H 1110 H ppm 7. Propose a structure for the compound C2H60, with the following 'H NMR spectral data. (Note this is the same molecular formula as the previous question) ppm 8. Propose a structure for the compound C,He with the following 'H NMR spectral data. SH2H 1H ppm 9. Propose a structure for the compound CxHyN with the following 'H...
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...
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
Label the IR spectrum for functional groups and identify the
correct structure of the compound. Indicate the peaks on the H1-NMR
to show carbon connectivity and splitting pattern. Calculate the
degree of unsaturation. Draw the correct structure of the compound.
2) Mol wt: 148 g/mol IR spectrum: H1-NMR: 5 H 10 11 ppm 2H 2.H
Draw the structure of compound 2 and label how it lines up with
the peaks from the NMR
Compound 2 зн 1H 2H 4H 2H 2H 2 PPM
Compound 2 зн 1H 2H 4H 2H 2H 2 PPM
4. Propose a structure for each molecular formula using the provided H NMR spectrum. (a) CH30 6H IH 1H PPM (b) C6H120 ЗН PPM (c) CaHgBr 2H PPM (d) C&H N 2H 2H PPM
1. Given the 'H NMR spectrum below and a molecular formula of CH20, provide a structure. Note you must assign all of the signals in the spectrum below to receive full credit. IR: 1600-1650 cm' (multiple peaks) (5 pts.) 3H, S 3H. t 2H, d 2H, d 2H, PPM 2. Given the 'H NMR spectrum below and a molecular formula of CH.0, provide a structure. Note you must assign all of the signals in the spectrum below to receive full...
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