A compound of unknown structure gave the following
spectroscopic data:
Mass spectrum: M+ = 88.1
IR: 3600cm-1
1H NMR: 1.4 (2H, quartet, J=7Hz); 1.2 (6H, singlet); 1.0 (1H,
singlet); 0.9 (3H, triplet, J=7Hz)
13C NMR: 74, 35, 27, 25
a. assuming that the compound contains C and H but may or may not
contain O, give three possible molecular formulas.
b. how many protons (H) does the compound contain?
c. what functional group(s) does the compound contain?
d. how many carbons does the compound contain?
e. what is the molecular formula of the compound?
f. what is the structure of the compound?
g. assign peaks in the molecule's 1H NMR spectrum corresponding to
specific proton. use the template at the bottom of the page.
Homework Answers
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A compound of unknown structure gave the following
spectroscopic data:
Mass spectrum: M+ = 88.1
IR:...
The following spectroscopic data corresponds to an an unknown compound with the molecular formula C4H8O2. Deduce...
The following spectroscopic data corresponds to an an unknown compound with the molecular formula C4H8O2. Deduce and draw the structure of the compound that corresponds to the data 1H NMR: δ 4.07 (quartet, 2H), 1.97 (singlet, 3H), 1.18 (triplet, 3H) ppm. "C NMR: δ 170, 60, 20, 14 ppm.
The mass spectrum of compound A shows molecular ion peak at m/z 88. The IR spectrum...
The mass spectrum of compound A shows molecular ion peak at m/z 88. The IR spectrum of this compound has a broad peak between 3200 and 3550 cm-1. The 1H NMR spectrum of A shows the following peaks: a triplet at d 0.9, a singlet at d 1.1, one more singlet at d 1.15, and a quartet at d 1.6. The area ratio of these peaks is 3:6:1:2. The 13C NMR contains 4 signals. In the space below, propose a...
2. Use the 'H NMR and IR data to determine the structure of the following compounds...
2. Use the 'H NMR and IR data to determine the structure of the following compounds and name them. Compound A Molecular formula: CroH IR absorptions at N/A H NMR data: 1.3 (singlet, 9H), 7.0 to 7.5 (multiplet, 5H) ppm Compound B Molecular formula: CHO IR absorptions at 1H NMR data: 1735-1745, 1050 cm 0.93 (doublet, 6H), 1.52 (multiplet, 2H), 1.69 (multiplet, 1H), 2.04 (singlet, 3H), and 4.10 (triplet,2H) ppm Compound C Molecular ion: IR absorptions at 1710 cm 1H...
for the following 2 compounds, please calculate, and show the calculations for, the degree of unsaturation, assign the IR spectrum peaks, assign the 13C NMR peaks, assign the 1H NMR peaks, and draw th...
for the following 2 compounds, please calculate, and
show the calculations for, the degree of unsaturation, assign the
IR spectrum peaks, assign the 13C NMR peaks, assign the 1H NMR
peaks, and draw the structure for the unknown compound.
CHIM 245 Spectroscopy Problem Set #2 In this problem set there are two unknown compounds. You are provided with the formula, IR spectrum, "C NMR spectrum, and 'H NMR spectrum for each compound. Each unknown is worth 10 points, with an...
Propose a structure for a compound with molecular formula C8H15ClO3 that fits the following spectroscopic data....
Propose a structure for a compound with molecular formula C8H15ClO3 that fits the following spectroscopic data. IR: 1780 cm-1, 1150 cm-1 1H NMR: 1.1δ (triplet, I=6), 1.9δ (quartet, I=2), 2.8δ (triplet, I=2), 3.4δ (quartet, I=4), 4.2δ (triplet, I=1) 13C NMR: 15, 31, 38, 57, 100, 173
Propose a structure for a compound with molecular formula C8H15ClO3 that fits the following spectroscopic data....
Propose a structure for a compound with molecular formula C8H15ClO3 that fits the following spectroscopic data. IR: 1780 cm-1, 1150 cm-1 1H NMR: 1.1δ (triplet, I=6), 1.9δ (quartet, I=2), 2.8δ (triplet, I=2), 3.4δ (quartet, I=4), 4.2δ (triplet, I=1) 13C NMR: 15, 31, 38, 57, 100, 173
Provide a structure for the compound with molecular formula CoH100 and with the following spectroscopic data....
Provide a structure for the compound with molecular formula CoH100 and with the following spectroscopic data. IR: 1680 cm-1 1H NMR: 1.25δ (triplet, IEM), 3.00 (quartet, IZM), 7-8δ (multiplet, l-SH) Edit
Provide the correct structure for your unknown based on the spectroscopic data provided. Provide the correct...
Provide the correct structure for your unknown based on the
spectroscopic data provided. Provide the correct name for your
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ethyl acetate in place of ethyl ethanoate) will be accepted.IR
spectrum: Assign as many peaks as possible. In particular, you
should assign peaks that were important in making your structural
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Please explain Propose a suitable structure that is consistent with the spectroscopic data given below. Explain what...
Please explain
Propose a suitable structure that is consistent with the spectroscopic data given below. Explain what each piece of data tells you about the molecule's structure. [10 point Draw you proposed structure here: Mass spec data m/z 208, 210 (1:1) strong absorbance @ 1700 cm IR Data doublet, 6H H NMR triplet, 3H triplet, 1H pentet, 2H septet, 1H 2 5 PPM 13C NMR 2 carbons 40 180 120 100 PPM 160 140 80 60 20 0
The following spectroscopic data corresponds to an an unknown compound with the molecular formula C4H8O2. Deduce and draw the structure of the compound that corresponds to the data 1H NMR: δ 4.07 (quartet, 2H), 1.97 (singlet, 3H), 1.18 (triplet, 3H) ppm. "C NMR: δ 170, 60, 20, 14 ppm.
2. Use the 'H NMR and IR data to determine the structure of the following compounds and name them. Compound A Molecular formula: CroH IR absorptions at N/A H NMR data: 1.3 (singlet, 9H), 7.0 to 7.5 (multiplet, 5H) ppm Compound B Molecular formula: CHO IR absorptions at 1H NMR data: 1735-1745, 1050 cm 0.93 (doublet, 6H), 1.52 (multiplet, 2H), 1.69 (multiplet, 1H), 2.04 (singlet, 3H), and 4.10 (triplet,2H) ppm Compound C Molecular ion: IR absorptions at 1710 cm 1H...
for the following 2 compounds, please calculate, and
show the calculations for, the degree of unsaturation, assign the
IR spectrum peaks, assign the 13C NMR peaks, assign the 1H NMR
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CHIM 245 Spectroscopy Problem Set #2 In this problem set there are two unknown compounds. You are provided with the formula, IR spectrum, "C NMR spectrum, and 'H NMR spectrum for each compound. Each unknown is worth 10 points, with an...
Provide a structure for the compound with molecular formula CoH100 and with the following spectroscopic data. IR: 1680 cm-1 1H NMR: 1.25δ (triplet, IEM), 3.00 (quartet, IZM), 7-8δ (multiplet, l-SH) Edit
Provide the correct structure for your unknown based on the
spectroscopic data provided. Provide the correct name for your
compound. Either the IUPAC name, or a commonly accepted name (i.e.,
ethyl acetate in place of ethyl ethanoate) will be accepted.IR
spectrum: Assign as many peaks as possible. In particular, you
should assign peaks that were important in making your structural
interpretation (i.e. functional group peaks such as OH, C=O, N-H,
etc.).
1H-NMR spectrum: Assign all the peaks in the spectrum...
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Please explain
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