Homework Answers
Interpretation of spectrum
IR
3000-3100 cm-1 peaks for sp2 =C-H stretch
2850-2950 cm-1 peaks for aliphatic C-H stretch
1720 cm-1 for C=O stretch
1H NMR
1.7 ppm for CH3 protons
2.4 ppm for CH2 protons
4.8 ppm for CH2 next to olefin
6.8 ppm for CH of olefin
Possible monoterpene : carvone
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From the following structures of monterpenes from essential oils.
Which structure match the H NMR ,...
1. List the compounds that have allylic methyl groups. (from the image given) 2. Explain how...
1. List the compounds that have allylic methyl groups. (from
the image given)
2. Explain how you could distinguish a compound that contains
one or more alkenes from a conpound that contains an aromatic group
using NMR.
3. List four ways you could differeniate the compounds shown
in the picture using NMR (1H and 13C) and IR.
OH carvone citronellal citronellol geranial {xo! OH geraniol limonene menthone a-terpinene
does geraniol structure match my IR spectrum? this lab was isolation of unknown terpene from orange...
does geraniol structure match my IR spectrum? this lab was
isolation of unknown terpene from orange peel help please
.- Transmittance Có 1045.13 1821 4 137596 3002 1101 21 alcohol 0 - amide lamire N-H alkyne EC-H 1016.4 90078 500 COCCER None 196 115561 one in S-H 698 51 cse 65 26 CON b alkylCH vingen aldent (th cao-u zonee 737.00 66f Zone ! i zones Zonen 64 Fingerprint 4000 3500 3000 1500 2500 2000 Wavenumbers (cm-1) 228) Y (92...
Which structure below will match the IR spectrum? 100 mm 500 1000 1500 2000 3000 4000...
Which structure below will match the IR spectrum? 100 mm 500 1000 1500 2000 3000 4000 wavenumber cm-1 d С b The 'H NMR will match which structure below? PPM -OH CH; OCH2CH3 HC OCH3 e d b a By considering lone pairs and resonance structures, which of the following structures does NOT have tetrahedral geometry( sp3 hybridization) around any of its central atoms? A. B. X C. D. NH2 ОА OB
Please write neatly. 6. Below are seven spectra: 2 x 11-NMR. 3 x 1·1x C-NMR, and 1 x MS, m hat order. At the bottom of the page there are seven structures, Match each structure with a spectrum by...
Please write neatly.
6. Below are seven spectra: 2 x 11-NMR. 3 x 1·1x C-NMR, and 1 x MS, m hat order. At the bottom of the page there are seven structures, Match each structure with a spectrum by writing the letter for the structure in the box on the correct spectrum. Fach structure and spectrum should be used only once HC-CH2-C CH3 OH 6 NH2 CH
6. Below are seven spectra: 2 x 11-NMR. 3 x 1·1x C-NMR, and...
Deduce the structure of the following 7 compounds given their IR, 'H NMR, and 13C NMR...
Deduce the structure of the following 7 compounds given their IR, 'H NMR, and 13C NMR spect ra, and draw their structure in the space provided below. For full credit, assign IR functional group absorptions and assign the structure's protons and carbons to their respective spectral resonances. For questions 8-10, provide a step- by-step mechanism for the transformations shown. The quiz must be turned in at the beginning of class on Wednesday, November 20, 2019 Compound 6: C$H14O3 Compound 6...
1. In the H NMR, draw the structure of the molecule directly on the spectrum and...
1. In the H NMR, draw the structure of the molecule directly on
the spectrum and identify each unique proton. Indicate which proton
is responsible for each peak.
2. In the IR spectrum, indicate which functional group is
responsible for each important peak. Attempt to identify at least
five important peaks. In you discussion, indicate which peaks are
most helpful in determining whether or not you converted the
starting material to the desired product.
3. Compare the IR spectrum of...
NMR Exercise Lab Determine the structure of the following unknown organic compounds from the 'H and...
NMR Exercise Lab Determine the structure of the following unknown organic compounds from the 'H and C NM below. When supplying spectroscopic information for parts b-c below, be sure to give units appropriately when identifying specific peaks in a spectrum that are associated with specific portions of the structural formula that you give in part a. (a) Provide a structural formula which is consistent with all of the given information; give the degrees of unsaturation (DoU). (b) For the 15'C...
Explain your answer, please. 2JaiDraw the predicted H NMR spectrum for the I following structure. Make...
Explain your answer, please.
2JaiDraw the predicted H NMR spectrum for the I following structure. Make sure to indicate the number of hydrogens corresponding to each peak as well as label the peaks (a, b, c... Starting from right to left) b: How many signals in the CH NMR would there bez c: give 3 distinctive peaks that would appear in the IR spectrum d: What distinctive feature do you expect to see in the mass spectrum? Structure 3-CH
determine the structure of your unknown from the molecular formula, IR, and 13C NMR spectra. assign all of your 13C NMR...
determine the structure of your unknown from the molecular
formula, IR, and 13C NMR spectra. assign all of your 13C NMR
absorptions.
IR & 1C NMR Lab Unknown Your group's mission is to determine the structure of your unknown from the molecular forrmula, IR and 13C NMR spectra. Assign all of your C NMR absorptions. You want to know which resonances correspond to which parts of the product's structure. The best way to do this is to draw a picture...
Which of the following structures for CH 4 correlates with the given 'H-NMR data? Chem. Shift...
Which of the following structures for CH 4 correlates with the given 'H-NMR data? Chem. Shift 0.8 1.4 Rel. Area 6 Splitting doublet septet 1 oy f
1. List the compounds that have allylic methyl groups. (from
the image given)
2. Explain how you could distinguish a compound that contains
one or more alkenes from a conpound that contains an aromatic group
using NMR.
3. List four ways you could differeniate the compounds shown
in the picture using NMR (1H and 13C) and IR.
OH carvone citronellal citronellol geranial {xo! OH geraniol limonene menthone a-terpinene
does geraniol structure match my IR spectrum? this lab was
isolation of unknown terpene from orange peel help please
.- Transmittance Có 1045.13 1821 4 137596 3002 1101 21 alcohol 0 - amide lamire N-H alkyne EC-H 1016.4 90078 500 COCCER None 196 115561 one in S-H 698 51 cse 65 26 CON b alkylCH vingen aldent (th cao-u zonee 737.00 66f Zone ! i zones Zonen 64 Fingerprint 4000 3500 3000 1500 2500 2000 Wavenumbers (cm-1) 228) Y (92...
Which structure below will match the IR spectrum? 100 mm 500 1000 1500 2000 3000 4000 wavenumber cm-1 d С b The 'H NMR will match which structure below? PPM -OH CH; OCH2CH3 HC OCH3 e d b a By considering lone pairs and resonance structures, which of the following structures does NOT have tetrahedral geometry( sp3 hybridization) around any of its central atoms? A. B. X C. D. NH2 ОА OB
Please write neatly.
6. Below are seven spectra: 2 x 11-NMR. 3 x 1·1x C-NMR, and 1 x MS, m hat order. At the bottom of the page there are seven structures, Match each structure with a spectrum by writing the letter for the structure in the box on the correct spectrum. Fach structure and spectrum should be used only once HC-CH2-C CH3 OH 6 NH2 CH
6. Below are seven spectra: 2 x 11-NMR. 3 x 1·1x C-NMR, and...
Deduce the structure of the following 7 compounds given their IR, 'H NMR, and 13C NMR spect ra, and draw their structure in the space provided below. For full credit, assign IR functional group absorptions and assign the structure's protons and carbons to their respective spectral resonances. For questions 8-10, provide a step- by-step mechanism for the transformations shown. The quiz must be turned in at the beginning of class on Wednesday, November 20, 2019 Compound 6: C$H14O3 Compound 6...
1. In the H NMR, draw the structure of the molecule directly on
the spectrum and identify each unique proton. Indicate which proton
is responsible for each peak.
2. In the IR spectrum, indicate which functional group is
responsible for each important peak. Attempt to identify at least
five important peaks. In you discussion, indicate which peaks are
most helpful in determining whether or not you converted the
starting material to the desired product.
3. Compare the IR spectrum of...
NMR Exercise Lab Determine the structure of the following unknown organic compounds from the 'H and C NM below. When supplying spectroscopic information for parts b-c below, be sure to give units appropriately when identifying specific peaks in a spectrum that are associated with specific portions of the structural formula that you give in part a. (a) Provide a structural formula which is consistent with all of the given information; give the degrees of unsaturation (DoU). (b) For the 15'C...
Explain your answer, please.
2JaiDraw the predicted H NMR spectrum for the I following structure. Make sure to indicate the number of hydrogens corresponding to each peak as well as label the peaks (a, b, c... Starting from right to left) b: How many signals in the CH NMR would there bez c: give 3 distinctive peaks that would appear in the IR spectrum d: What distinctive feature do you expect to see in the mass spectrum? Structure 3-CH
determine the structure of your unknown from the molecular
formula, IR, and 13C NMR spectra. assign all of your 13C NMR
absorptions.
IR & 1C NMR Lab Unknown Your group's mission is to determine the structure of your unknown from the molecular forrmula, IR and 13C NMR spectra. Assign all of your C NMR absorptions. You want to know which resonances correspond to which parts of the product's structure. The best way to do this is to draw a picture...
Which of the following structures for CH 4 correlates with the given 'H-NMR data? Chem. Shift 0.8 1.4 Rel. Area 6 Splitting doublet septet 1 oy f
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