Homework Answers
The proton NMR spectra for a molecule with the formula C3H7OCl has the 3 H singlet has to be a methyl group attached to an O –
C3H7OCl – CH3O = C2H4Cl
Cl will bond like H so it must be on one of the two possible positions: on the Cl attached to the O or the adjacent carbon.
Since 4 H has very close shift, the Cl must be on the adjacent carbon.
The structure of C3H7OCl using the HNMR is shown below.
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Determine the structure of C3H7OCl using the hnmr shown
below.
#7 CHOC 4H back to problems...
STRUCTURE DETERMINATION PROBLEMS USING IR AND PROTON NMR SPECTROSCOPY Determine the structure of the six compounds...
STRUCTURE DETERMINATION PROBLEMS USING IR AND PROTON NMR
SPECTROSCOPY
Determine the structure of the six compounds whose IR and PMR
spectra are provided on the attached sheets, given the following
comments about the provided information and spectra.
PMR Spectra: The PMR spectrum of each compound is provided,
along with peak areas. The peak areas are given as the simples
whole number ratio of protons and are indicated (for exmpale, 4H).
Your final structure must be consistent with the chemical shift...
predict the IR spectrum and HNMR of 2-bromocyclohexanone peaks in the NMR spectrum and record the...
predict the IR spectrum and HNMR of 2-bromocyclohexanone
peaks in the NMR spectrum and record the chemical shift, the splitting, an peak in the NMR table below. 1H NMR Data Peak Chemical Shift (6) Multiplicity н Peak Structure: 1 1 5 Br 6 N 3 7 4 8 + Specify the number of hydrogens associated with each peak. 11. Draw the major organic product for each of the following reactions. a. o
Using the following spectral information, determine the structure of the following organic compound. 1 HNMR: Singlet...
Using the following spectral information, determine the structure of the following organic compound. 1 HNMR: Singlet at 12 delta units, integration of 1 Singlet at 2.5 delta units, integration of 2 Doublet at 7.5 delta units, integration of 2 Doublet at 7.3 delta units, integration of 2 Singlet at 2.3 delta units, integration of 2 FTIR: Broad peak from 3500 to 2500 cm-1 , peaks at 2250 and 1750 cm-1 GCMS: 175 m/z
3. The HNMR of the product is shown below with the region of 7.5-9.0 ppm blown up for better view. Specifically, in ter...
3. The HNMR of the product is shown below with the region of 7.5-9.0 ppm blown up for better view. Specifically, in terms of the splitting patterns in the 'HNMR.indicate why you know the product is 3-nitromethylbenzoate 8.7 8.2 7.7 9.0 8.0 7.0 6.0 5.0 4,0 3.0 2.0 00 F
3. The HNMR of the product is shown below with the region of 7.5-9.0 ppm blown up for better view. Specifically, in terms of the splitting patterns in the 'HNMR.indicate...
Determine the magnitude and direction of all support reactions for the pin-jointed structure shown below. Ax=?...
Determine the magnitude and
direction of all support reactions for the pin-jointed structure
shown below.
Ax=?
Ay=?
Dx=?
Dy=?
Md=?
450 b T B 3h C 8 ft 4h 4h D
Zyban-3 c. Using numbers on structure, label each integrated peak on the HNMR spectrum. Label peaks...
Zyban-3 c. Using numbers on structure, label each integrated peak on the HNMR spectrum. Label peaks due to nitrogen protons "11". A copy of the spectrum is online also po J.93 Сн -1.556 --- 1.537 83 82 81 80 79 78 77 76 75 ppm 1.60 1.55 1.50 2.00 2.00 ppm water --- ODOS €966 10.0 9.5 9.0 8.5 8.0 7.5 7.0 6.5 6.0 5.5 ppm 6.0 4.5 4.0 3.5 2.0 1.5 1.0
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...
4. The H NMR spectrum shown below is for a compound with the formula CgHi9lN a)...
4. The H NMR spectrum shown below is for a compound with the formula CgHi9lN a) Determine the lOU for the compound b) Propose a structure for the compound c) Assign all H NMR signals to the hydrogens in your structure 6H 4H 4H 4H 1H
4 (10 pts) 7. Determine the structure of compound C, whose NMR is shown below. The...
4 (10 pts) 7. Determine the structure of compound C, whose NMR is shown below. The formula for C is CH,CI. The IR has a band at 2950 cm. Assign the NMR signals to the structure you are proposing (i.e. label your hydrogens). Alkene Compound C GHA 2HE 2WE 2HD IRC 0.14 0.15 0.07 0.15 0.43 PPM
Determine the structure of the compounds using the specteral infromation shown below. s compound has the...
Determine the structure of the compounds using the specteral
infromation shown below.
s compound has the molecular formula C4H1N MICRONS 14 15 16 90 70 50 30 20 4000 3600 3200 2 2800 2400 1000 800 600 1600 WAVENUMBERS (CM-1) 1800 1400 1200 quartet 10
STRUCTURE DETERMINATION PROBLEMS USING IR AND PROTON NMR
SPECTROSCOPY
Determine the structure of the six compounds whose IR and PMR
spectra are provided on the attached sheets, given the following
comments about the provided information and spectra.
PMR Spectra: The PMR spectrum of each compound is provided,
along with peak areas. The peak areas are given as the simples
whole number ratio of protons and are indicated (for exmpale, 4H).
Your final structure must be consistent with the chemical shift...
predict the IR spectrum and HNMR of 2-bromocyclohexanone
peaks in the NMR spectrum and record the chemical shift, the splitting, an peak in the NMR table below. 1H NMR Data Peak Chemical Shift (6) Multiplicity н Peak Structure: 1 1 5 Br 6 N 3 7 4 8 + Specify the number of hydrogens associated with each peak. 11. Draw the major organic product for each of the following reactions. a. o
3. The HNMR of the product is shown below with the region of 7.5-9.0 ppm blown up for better view. Specifically, in terms of the splitting patterns in the 'HNMR.indicate why you know the product is 3-nitromethylbenzoate 8.7 8.2 7.7 9.0 8.0 7.0 6.0 5.0 4,0 3.0 2.0 00 F
3. The HNMR of the product is shown below with the region of 7.5-9.0 ppm blown up for better view. Specifically, in terms of the splitting patterns in the 'HNMR.indicate...
Determine the magnitude and
direction of all support reactions for the pin-jointed structure
shown below.
Ax=?
Ay=?
Dx=?
Dy=?
Md=?
450 b T B 3h C 8 ft 4h 4h D
Zyban-3 c. Using numbers on structure, label each integrated peak on the HNMR spectrum. Label peaks due to nitrogen protons "11". A copy of the spectrum is online also po J.93 Сн -1.556 --- 1.537 83 82 81 80 79 78 77 76 75 ppm 1.60 1.55 1.50 2.00 2.00 ppm water --- ODOS €966 10.0 9.5 9.0 8.5 8.0 7.5 7.0 6.5 6.0 5.5 ppm 6.0 4.5 4.0 3.5 2.0 1.5 1.0
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...
4. The H NMR spectrum shown below is for a compound with the formula CgHi9lN a) Determine the lOU for the compound b) Propose a structure for the compound c) Assign all H NMR signals to the hydrogens in your structure 6H 4H 4H 4H 1H
4 (10 pts) 7. Determine the structure of compound C, whose NMR is shown below. The formula for C is CH,CI. The IR has a band at 2950 cm. Assign the NMR signals to the structure you are proposing (i.e. label your hydrogens). Alkene Compound C GHA 2HE 2WE 2HD IRC 0.14 0.15 0.07 0.15 0.43 PPM
Determine the structure of the compounds using the specteral
infromation shown below.
s compound has the molecular formula C4H1N MICRONS 14 15 16 90 70 50 30 20 4000 3600 3200 2 2800 2400 1000 800 600 1600 WAVENUMBERS (CM-1) 1800 1400 1200 quartet 10
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