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5. Shown are the structures of two isomeric esters. The 1H NMR of each ester has...
Shown above is the 1H-NMR spectrum of a compound with the formula C5H10O2 . Choose from...
Shown above is the 1H-NMR spectrum of a compound with
the formula C5H10O2 . Choose from the constitutional isomers below
to assign a structure to this spectrum.
3H 2H 3H 2H PPM Shown above is the 'H-NMR spectrum of a compound with the formula C5Hi002. Choose from the constitutional isomers below to assign a structure to this spectrum a b C CH3CH2CH2CH2COH CH3CH2COCH2CH3 CH3CH2CH2COCH3 (Choose the letter corresponding to the correct structure from the drop-down list provided.) Correct Structure: Assign...
1H NMR spectra C through F (shown below) correspond to four isomeric alcohols with the molecular...
1H NMR spectra C through F (shown below) correspond to four
isomeric alcohols with the molecular formula of C5H12O. Please
propose a suitable structure for each spectrum and assign the 1H
NMR signals for each Hs in the molecule.
1H NMR spectra C through F (shown below) correspond to four isomeric alcohols with the molecular formula of C5H12O. Please propose a suitable structure for each spectrum and assign the 1H NMR signals for each Hs in the molecule.
Determine the structure of each compound for each 1H NMR spectrum. Draw the determined structure and...
Determine the structure of each compound for each 1H NMR
spectrum. Draw the determined structure and annotate (correlate the
equivalent protons with the corresponding NMR signal(s) in the
spectrum).
Compound E, M = 164.20 g/mol io 8 PPM Compound F, M = 108.14 g/mol PPM
Determine the structure of each compound for each 1H NMR spectrum. Draw the determined structure and...
Determine the structure of each compound for each 1H NMR
spectrum. Draw the determined structure and annotate (correlate the
equivalent protons with the corresponding NMR signal(s) in the
spectrum).
Compound C, M = 102.13 g/mol PPM Compound D, M = 136.15 g/mol 12 10 8 6 PPM 4 2 0
The 1H-NMR spectrum of ethanol (CH3CH2OH) is shown below. Assign each signal to the protons it...
The 1H-NMR spectrum of ethanol (CH3CH2OH) is shown below. Assign
each signal to the protons it corresponds to in the molecule.
Explain the splitting pattern observed for each signal.
CH2CH2OH 0 2 4 5 7 8 (ppm)
The 1H NMR spectrum for the cyclohexyl ester shown below has a peak at 4.91 ppm due to the proton indicated in bold. The...
The 1H NMR spectrum for the cyclohexyl ester shown below has a
peak at 4.91 ppm due to
the proton indicated in bold. The signal is a triplet of triplets
(tt) with 3J values of 8.8 Hz and 3.8
Hz. Use the coupling constant values and the Karplus relationship
to determine whether the
ester group is axial or equatorial.
The 1H NMR spectrum for the cyclohexyl ester shown below has a peak at 4.91 ppm due to the proton indicated...
Assign the peaks in the 1H NMR shown below to the correct protons in molecule 2....
Assign the peaks in the 1H NMR shown below to the correct
protons in molecule 2. The portuon of the NMR between 8-6.5 ppm has
been magnified for easier viewing.
4) Assign the peaks in the 'H NMR shown below to the correct protons in molecule 2. The portion of the NMR between 8-6.5 ppm has been magnified for easier viewing. 2H 1H2H1H Зн molecule 2 Зн PPM
The following is the predicted 1H-NMR spectrum for an unknown compound with molecular formula C6H14O. This...
The following is the predicted 1H-NMR spectrum for an
unknown compound with molecular formula C6H14O. This compound is a
liquid at room temperature, is slightly soluble in water, and
reacts with sodium metal with the evolution of a gas.
9H 1 1H 2 1H 31H 4 2H Not Submitted PPM Choose from the constitutional isomers below to assign a structure to this spectrum. CH3 CH3 ba CH2CH3 CH3CH2CH2CHCH2OH a b c d e g CH3CH2CHCHCH3 а ь | OH f...
6. The 1H NMR spectrum for a compound with molecular formula C7H1402 is given below. Propose...
6. The 1H NMR spectrum for a compound with molecular formula C7H1402 is given below. Propose a structure for this compound and LABEL the protons on your structure to match the appropriate 'H NMR peak. (1 pt) C7H1402 1.12 0.55 1.08 3.2 1.6 PPM
Page - 8 - of 9 B Solvent • ppm 8A) MATCH the proton (1H) NMR...
Page - 8 - of 9 B Solvent • ppm 8A) MATCH the proton (1H) NMR spectrum above to the CORRECT molecule (1, 2, 3, or 4). 8B) In the table below, ASSIGN each signal in the spectrum to the corresponding hydrogen atom(s) in the compounds. Use this format example: 3.0 ppm ЗН singlet (fictitious) -CH SIGNAL ppm (x scale) Integration Splitting Assignment A B с D E
Shown above is the 1H-NMR spectrum of a compound with
the formula C5H10O2 . Choose from the constitutional isomers below
to assign a structure to this spectrum.
3H 2H 3H 2H PPM Shown above is the 'H-NMR spectrum of a compound with the formula C5Hi002. Choose from the constitutional isomers below to assign a structure to this spectrum a b C CH3CH2CH2CH2COH CH3CH2COCH2CH3 CH3CH2CH2COCH3 (Choose the letter corresponding to the correct structure from the drop-down list provided.) Correct Structure: Assign...
1H NMR spectra C through F (shown below) correspond to four
isomeric alcohols with the molecular formula of C5H12O. Please
propose a suitable structure for each spectrum and assign the 1H
NMR signals for each Hs in the molecule.
1H NMR spectra C through F (shown below) correspond to four isomeric alcohols with the molecular formula of C5H12O. Please propose a suitable structure for each spectrum and assign the 1H NMR signals for each Hs in the molecule.
Determine the structure of each compound for each 1H NMR
spectrum. Draw the determined structure and annotate (correlate the
equivalent protons with the corresponding NMR signal(s) in the
spectrum).
Compound E, M = 164.20 g/mol io 8 PPM Compound F, M = 108.14 g/mol PPM
Determine the structure of each compound for each 1H NMR
spectrum. Draw the determined structure and annotate (correlate the
equivalent protons with the corresponding NMR signal(s) in the
spectrum).
Compound C, M = 102.13 g/mol PPM Compound D, M = 136.15 g/mol 12 10 8 6 PPM 4 2 0
The 1H-NMR spectrum of ethanol (CH3CH2OH) is shown below. Assign
each signal to the protons it corresponds to in the molecule.
Explain the splitting pattern observed for each signal.
CH2CH2OH 0 2 4 5 7 8 (ppm)
The 1H NMR spectrum for the cyclohexyl ester shown below has a
peak at 4.91 ppm due to
the proton indicated in bold. The signal is a triplet of triplets
(tt) with 3J values of 8.8 Hz and 3.8
Hz. Use the coupling constant values and the Karplus relationship
to determine whether the
ester group is axial or equatorial.
The 1H NMR spectrum for the cyclohexyl ester shown below has a peak at 4.91 ppm due to the proton indicated...
Assign the peaks in the 1H NMR shown below to the correct
protons in molecule 2. The portuon of the NMR between 8-6.5 ppm has
been magnified for easier viewing.
4) Assign the peaks in the 'H NMR shown below to the correct protons in molecule 2. The portion of the NMR between 8-6.5 ppm has been magnified for easier viewing. 2H 1H2H1H Зн molecule 2 Зн PPM
The following is the predicted 1H-NMR spectrum for an
unknown compound with molecular formula C6H14O. This compound is a
liquid at room temperature, is slightly soluble in water, and
reacts with sodium metal with the evolution of a gas.
9H 1 1H 2 1H 31H 4 2H Not Submitted PPM Choose from the constitutional isomers below to assign a structure to this spectrum. CH3 CH3 ba CH2CH3 CH3CH2CH2CHCH2OH a b c d e g CH3CH2CHCHCH3 а ь | OH f...
6. The 1H NMR spectrum for a compound with molecular formula C7H1402 is given below. Propose a structure for this compound and LABEL the protons on your structure to match the appropriate 'H NMR peak. (1 pt) C7H1402 1.12 0.55 1.08 3.2 1.6 PPM
Page - 8 - of 9 B Solvent • ppm 8A) MATCH the proton (1H) NMR spectrum above to the CORRECT molecule (1, 2, 3, or 4). 8B) In the table below, ASSIGN each signal in the spectrum to the corresponding hydrogen atom(s) in the compounds. Use this format example: 3.0 ppm ЗН singlet (fictitious) -CH SIGNAL ppm (x scale) Integration Splitting Assignment A B с D E
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