Homework Answers
16)
Hi there, the unknown identified as 2-chlorobutane.
17)
The unknown identified as 4'-methylpropiophenone
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16. Propose a structure for a molecule of formula CaHsCl which gave the following 1H NMR spectrum. PPM 17. Propose a st...
4. Propose a structure for a molecule whose mass spectrum shows a parent ion at m/z...
4. Propose a structure for a molecule whose mass spectrum shows a parent ion at m/z 100 with a base peak at m/z 43, an IR peak at 1720 cm' which gave the following 'H NMR spectrum. 33 N - PPM 5. Propose a structure for a molecule whose mass spectrum shows a parent ion at m/z 100 with a base peak at m/z 43, an IR peak at 1720 cm' which gave the following 'H NMR spectrum. doublet 2...
1. Propose structure formulas for each isomer of C7H140 in the boxes below based on the attached ...
1. Propose structure formulas for each isomer of C7H140 in the boxes below based on the attached H-NMR and 18C-NMR spectra. C,H40 Isomer 1 C,Hl40 Isomer 2 CH4 Isomer 3 C,H40 ISOMER 1 1H NMR 9H 2H 3H 3 220 200 180 160 140 120 100 8060 40 0 PPM CjH40 ISOMER 2 1H NMR 6H ЗН 300 2H PPM 13C NMFR 220 20 180 160140 120 1008604020 0) PPM C7H140 ISOMER 3 1H NMR зн зн зн 2H 2H...
Molecule C: Molecule D: Can someone PLEASE EXPLAIN the answers?????? 2. Below are the 'H and...
Molecule C:
Molecule D:
Can someone PLEASE EXPLAIN the answers??????
2. Below are the 'H and 13C NMR spectra for four isomers of C&H:02. Provide the structure that produced each set of spectra. Molecule A: 'H NMR 3H 3H no coupling, so no adjacent carbons with hydrogen atoms 2H 5 3 2 0 PPM 13C NMR aldehyde or ketone no aldehyde in 1H NMR, SO ketone 220 200 180 160 140 120 100 PPM 80 60 40 20 0 Molecule...
Which compound gives the following spectra? For the 1H-NMR assign all signals. interpret mol peak and...
Which compound gives the following spectra?
For the 1H-NMR assign all signals. interpret mol peak and base peak
in the mass spectrum if a mole peak exists. Assign at least two 13C
signals. How does the IR spectrum support your finding?
Check 200 180 160 120 80 60 40 20 0 140 a 100 ppm s, 3H t, 3 H d. 2 a. 2 H d. 2H s, 1 H 1 10 9 8 7 6 4 3 2 1...
35. Propose a structure for a molecule of formula CsHi0O2 which gave the following 'H NMR...
35. Propose a structure for a molecule of formula CsHi0O2 which gave the following 'H NMR spectrum. (3) 3 C--C -01 sela 2 PPM 36 Propose a structure for a molecule of formula CigHa which gave the following H NMR spectrum. (3) K HC -2-1 3H 2H 2 2H seatar 0 PPM 37. Starting with benzene and any necessary reagents, outline all steps in the syntheses of two of the following molecules (6) Bonus 2 points for a third synthesis...
parent ion at m/z 102 (M*), IR peaks at 1740 and 1150 cm 10. Propose a...
parent ion at m/z 102 (M*), IR peaks at 1740 and 1150 cm 10. Propose a structure for a molecule whose mass spectrum shows which gave the following 'H NMR spectrum.) 6 1 septet 2 5 0 6 PPM 11. Propose a structure for a molecule whose mass spectrum shows a parent ion at m/z 116 (M*) with at 1740 and 1150 cm1 which gave the following H NMR spectrum. base peak at m/z 43, IR peaks 6 1 2...
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...
Compound 2: Use the information provided below and the IR and NMR spectra on the next...
Compound 2: Use the information provided below and the IR and NMR spectra on the next page to answer the following questions. a) An MS was taken of compound 2 and the table is given below. Determine the molecular formula of 2 from the MS given below relative abundance m/z 132 100 133 9.8 b) Calculate the Index of Hydrogen Deficiency/Degree of Unsaturation for the molecule. c) Using the IR spectrum and the 1H- and 13C-NMR spectra given below, determine...
SPECTROSCOPY PROBLEM SET (Homework Assignment 2) [2 pts] Due November 18, 2019 Score: Name: 1. Propose...
SPECTROSCOPY PROBLEM SET (Homework Assignment 2) [2 pts] Due November 18, 2019 Score: Name: 1. Propose a structure for a hydrocarbon whose mass spectrum shows a parention at m/z 100, a base peak at m/z 43 which gave the following 'H NMR spectrum. PPM 2. Propose a structure for a molecule whose mass spectrum shows a parent ion at m/z 86 with a base peak at m/z 29, an IR peak at 1720 cm' and which gave the following 'H...
9. Propose a structure for a molecule whose mass spectrum shows a parent ion at m/z...
9. Propose a structure for a molecule whose mass spectrum shows a parent ion at m/z 102 (M), IR peaks at 1740 and 1150 cm which gave the following 'H NMR spectrum.) 2 PPM
4. Propose a structure for a molecule whose mass spectrum shows a parent ion at m/z 100 with a base peak at m/z 43, an IR peak at 1720 cm' which gave the following 'H NMR spectrum. 33 N - PPM 5. Propose a structure for a molecule whose mass spectrum shows a parent ion at m/z 100 with a base peak at m/z 43, an IR peak at 1720 cm' which gave the following 'H NMR spectrum. doublet 2...
1. Propose structure formulas for each isomer of C7H140 in the boxes below based on the attached H-NMR and 18C-NMR spectra. C,H40 Isomer 1 C,Hl40 Isomer 2 CH4 Isomer 3 C,H40 ISOMER 1 1H NMR 9H 2H 3H 3 220 200 180 160 140 120 100 8060 40 0 PPM CjH40 ISOMER 2 1H NMR 6H ЗН 300 2H PPM 13C NMFR 220 20 180 160140 120 1008604020 0) PPM C7H140 ISOMER 3 1H NMR зн зн зн 2H 2H...
Molecule C:
Molecule D:
Can someone PLEASE EXPLAIN the answers??????
2. Below are the 'H and 13C NMR spectra for four isomers of C&H:02. Provide the structure that produced each set of spectra. Molecule A: 'H NMR 3H 3H no coupling, so no adjacent carbons with hydrogen atoms 2H 5 3 2 0 PPM 13C NMR aldehyde or ketone no aldehyde in 1H NMR, SO ketone 220 200 180 160 140 120 100 PPM 80 60 40 20 0 Molecule...
Which compound gives the following spectra?
For the 1H-NMR assign all signals. interpret mol peak and base peak
in the mass spectrum if a mole peak exists. Assign at least two 13C
signals. How does the IR spectrum support your finding?
Check 200 180 160 120 80 60 40 20 0 140 a 100 ppm s, 3H t, 3 H d. 2 a. 2 H d. 2H s, 1 H 1 10 9 8 7 6 4 3 2 1...
35. Propose a structure for a molecule of formula CsHi0O2 which gave the following 'H NMR spectrum. (3) 3 C--C -01 sela 2 PPM 36 Propose a structure for a molecule of formula CigHa which gave the following H NMR spectrum. (3) K HC -2-1 3H 2H 2 2H seatar 0 PPM 37. Starting with benzene and any necessary reagents, outline all steps in the syntheses of two of the following molecules (6) Bonus 2 points for a third synthesis...
parent ion at m/z 102 (M*), IR peaks at 1740 and 1150 cm 10. Propose a structure for a molecule whose mass spectrum shows which gave the following 'H NMR spectrum.) 6 1 septet 2 5 0 6 PPM 11. Propose a structure for a molecule whose mass spectrum shows a parent ion at m/z 116 (M*) with at 1740 and 1150 cm1 which gave the following H NMR spectrum. base peak at m/z 43, IR peaks 6 1 2...
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...
Compound 2: Use the information provided below and the IR and NMR spectra on the next page to answer the following questions. a) An MS was taken of compound 2 and the table is given below. Determine the molecular formula of 2 from the MS given below relative abundance m/z 132 100 133 9.8 b) Calculate the Index of Hydrogen Deficiency/Degree of Unsaturation for the molecule. c) Using the IR spectrum and the 1H- and 13C-NMR spectra given below, determine...
SPECTROSCOPY PROBLEM SET (Homework Assignment 2) [2 pts] Due November 18, 2019 Score: Name: 1. Propose a structure for a hydrocarbon whose mass spectrum shows a parention at m/z 100, a base peak at m/z 43 which gave the following 'H NMR spectrum. PPM 2. Propose a structure for a molecule whose mass spectrum shows a parent ion at m/z 86 with a base peak at m/z 29, an IR peak at 1720 cm' and which gave the following 'H...
9. Propose a structure for a molecule whose mass spectrum shows a parent ion at m/z 102 (M), IR peaks at 1740 and 1150 cm which gave the following 'H NMR spectrum.) 2 PPM
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