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Shown below is the 1D 1H-NMR spectrum of 2-hexenal annotated with resonance integrals (below) and chemical...
Shown below is the 1D 1H-NMR spectrum of 2-hexenal annotated with resonance integrals (below) and chemical shifts (above). Which resonances are most likely attributable to the vinyl hydrogens of the trans-isomer this compound (circled in red)? Circle these resonances on the 1D NMR. Explain your assignment 0.973 H H HH H XH HHH Η Η Η 1.548 9.513 2.327 7.271 6.859 7.064 6.129 5.835 2.218 YY WY 0.150 Los 149 520 PPM 20 B.O 70 20 6.0 5.0 10 3.0...
A variety of spectra for an organic compound with molecular formula C10H16O are presented below. The experimental accurate mass using (+) APCI source is 153.1280 u. The 1H, 13C, COSY, HSQC and HMBC NM...
A variety of spectra for an organic compound with molecular
formula C10H16O are presented below. The
experimental accurate mass using (+) APCI source is 153.1280 u. The
1H, 13C, COSY, HSQC and HMBC NMR spectra are given in the following
slides. Propose a structure for this unknown and answer or address
the following questions or requirements:
d. If there are still any questionable assignments, propose
additional NMR experiments which would solve those questions and
briefly explain specifically what correlations you...
A variety of spectra for an organic compound with molecular formula C10H16O are presented below. The experimental accurate mass using (+) APCI source is 153.1280 u. The 1H, 13C, COSY, HSQC and HMBC NM...
A variety of spectra for an organic compound with molecular
formula C10H16O are presented below. The
experimental accurate mass using (+) APCI source is 153.1280 u. The
1H, 13C, COSY, HSQC and HMBC NMR spectra are given in the following
slides. Propose a structure for this unknown and answer or address
the following questions or requirements:
a. Using the most abundant isotopes of C, H and O, what are the
errors in ppm and milli-Daltons for the experimental accurate
mass?...
CHEM210 Name 3. Based on the molecular formula and spectrum below, propose a structure to analyze...
CHEM210 Name 3. Based on the molecular formula and spectrum below, propose a structure to analyze each peak using the information on chemical shift, integration, and multiplicity lean role. The insets are expanded views of each peak so that the muplicity is clear. propose a structure for the molecule. Show your work it, integration, and multiplicity learned in the tutorial. Molecular Formula: CH..0: Predicted 1H NMR Spectrum 34 4.15 4.10 ppm 4.05 1.30 1.25 1.20 ppm 1.15 1.00 OH 2.50...
Fill out the tables below of the starting material and pure product by using the given...
Fill out the tables below of the starting material and pure
product by using the given NMR spectrums. Identify if the pure
isomer of methyl nitrobenzoate as ortho, meta, or para.
Complete the table below using your proton NMR spectrum of your starting material. Be sure to include all peaks. Note: The table is expandable. Use the structure below for the letter assignments in your table. Splitting Integration Assignment Peak (ppm) Other Notes -7.95 -7.92 0627 -787 785 7.30 751...
label the spectrum OTBS Meo Yome Me H NMR spectrum (CDC13, 400 MHz) 8.5 8.0 7.5...
label the spectrum
OTBS Meo Yome Me H NMR spectrum (CDC13, 400 MHz) 8.5 8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 f1 (ppm) 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 -0.5 18C NMR spectrum (CDCI, 100 MHz) 210 200 190 180 170 160 150 140 130 120 110 100 fi (ppm) 90 80 70 60 50 40 30 20 10 -10
H2 Ha a) Given that the 'H NMR spectrum was acquired at 300 MHz, convert the ppm values...
H2 Ha a) Given that the 'H NMR spectrum was acquired at 300 MHz, convert the ppm values for the alkenyl region to Hz and provide the cis proton coupling constant to 1 decimal place. CEC Ha OH b) Please provide the chemical shift values for i) Both alkyne carbons i) The aromatic carbon bearing the substituent ii)H iv) H v) H vi) H H NMR spectrum as 25 1C NMR spectrum 9911 1C NMR spectrum 90 60 10 170...
1. How many different types of protons appear to be present? What are the chemical shifts...
1.
How many different types
of protons appear to be present? What are the chemical shifts for
these protons? What does this indicate (if anything) about the
electronic environment of the protons?
2.
What are the multiplicities for each peak?
UN (43 MIL.) 10.02s, 1H), 7.716.J-2 Hz. ) 2.0 11.5 11.0 10.5 10.0 9.5 9.0 8.5 8.0 7.5 7.0 6.5 6.0 4.0 3.5 3.0 2.5 20 15 100.5 0.0 -0.5 -1.0 -1.5 -2. 5.5 5.0 4.5 fl (ppm)
Liquid Extraction NMR and IR The 'H NMR for the unknown C: 8.0 7.5 7.0 6.5...
Liquid Extraction NMR and IR The 'H NMR for the unknown C: 8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 ppm Proton peak Integration Neighbors (n) Chemical Shift (ppm) Splitting pattern (n+1) (report as singlet/doublet/triplet/ete. 9 b. C must be an aliphatic alcohol. There is a strong O-H stretch in the IR and zero degrees of unsaturation. The remaining structure is determined by 'H NMR. (c) Predicted Structure C (label hydrogens with...
V. Draw the structures of Compound 23A (6 pts), Compound 23B (6 pts) and clearly indicate...
V. Draw the structures of Compound 23A (6 pts), Compound 23B (6 pts) and clearly indicate your assignments of all proton resonances using the lower case letter associated with the signal (6 pts). Calculate the Unsaturation Index of each compound (2 pts) (20 points total) 1.24 3.0 1.26 2.5 e = 1.25 ppm doublet, 6H 2.0 a = 10.0 ppm 1.5 Compound 23a: C10H420 singlet, 1H 10.00 7.83 7.85 7.09 7.07 1.0 Unsat. Index = (2C+2-H-X+N)/2 = X=number of halogens...
Shown below is the 1D 1H-NMR spectrum of 2-hexenal annotated with resonance integrals (below) and chemical shifts (above). Which resonances are most likely attributable to the vinyl hydrogens of the trans-isomer this compound (circled in red)? Circle these resonances on the 1D NMR. Explain your assignment 0.973 H H HH H XH HHH Η Η Η 1.548 9.513 2.327 7.271 6.859 7.064 6.129 5.835 2.218 YY WY 0.150 Los 149 520 PPM 20 B.O 70 20 6.0 5.0 10 3.0...
A variety of spectra for an organic compound with molecular
formula C10H16O are presented below. The
experimental accurate mass using (+) APCI source is 153.1280 u. The
1H, 13C, COSY, HSQC and HMBC NMR spectra are given in the following
slides. Propose a structure for this unknown and answer or address
the following questions or requirements:
d. If there are still any questionable assignments, propose
additional NMR experiments which would solve those questions and
briefly explain specifically what correlations you...
A variety of spectra for an organic compound with molecular
formula C10H16O are presented below. The
experimental accurate mass using (+) APCI source is 153.1280 u. The
1H, 13C, COSY, HSQC and HMBC NMR spectra are given in the following
slides. Propose a structure for this unknown and answer or address
the following questions or requirements:
a. Using the most abundant isotopes of C, H and O, what are the
errors in ppm and milli-Daltons for the experimental accurate
mass?...
CHEM210 Name 3. Based on the molecular formula and spectrum below, propose a structure to analyze each peak using the information on chemical shift, integration, and multiplicity lean role. The insets are expanded views of each peak so that the muplicity is clear. propose a structure for the molecule. Show your work it, integration, and multiplicity learned in the tutorial. Molecular Formula: CH..0: Predicted 1H NMR Spectrum 34 4.15 4.10 ppm 4.05 1.30 1.25 1.20 ppm 1.15 1.00 OH 2.50...
Fill out the tables below of the starting material and pure
product by using the given NMR spectrums. Identify if the pure
isomer of methyl nitrobenzoate as ortho, meta, or para.
Complete the table below using your proton NMR spectrum of your starting material. Be sure to include all peaks. Note: The table is expandable. Use the structure below for the letter assignments in your table. Splitting Integration Assignment Peak (ppm) Other Notes -7.95 -7.92 0627 -787 785 7.30 751...
label the spectrum
OTBS Meo Yome Me H NMR spectrum (CDC13, 400 MHz) 8.5 8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 f1 (ppm) 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 -0.5 18C NMR spectrum (CDCI, 100 MHz) 210 200 190 180 170 160 150 140 130 120 110 100 fi (ppm) 90 80 70 60 50 40 30 20 10 -10
H2 Ha a) Given that the 'H NMR spectrum was acquired at 300 MHz, convert the ppm values for the alkenyl region to Hz and provide the cis proton coupling constant to 1 decimal place. CEC Ha OH b) Please provide the chemical shift values for i) Both alkyne carbons i) The aromatic carbon bearing the substituent ii)H iv) H v) H vi) H H NMR spectrum as 25 1C NMR spectrum 9911 1C NMR spectrum 90 60 10 170...
1.
How many different types
of protons appear to be present? What are the chemical shifts for
these protons? What does this indicate (if anything) about the
electronic environment of the protons?
2.
What are the multiplicities for each peak?
UN (43 MIL.) 10.02s, 1H), 7.716.J-2 Hz. ) 2.0 11.5 11.0 10.5 10.0 9.5 9.0 8.5 8.0 7.5 7.0 6.5 6.0 4.0 3.5 3.0 2.5 20 15 100.5 0.0 -0.5 -1.0 -1.5 -2. 5.5 5.0 4.5 fl (ppm)
Liquid Extraction NMR and IR The 'H NMR for the unknown C: 8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 ppm Proton peak Integration Neighbors (n) Chemical Shift (ppm) Splitting pattern (n+1) (report as singlet/doublet/triplet/ete. 9 b. C must be an aliphatic alcohol. There is a strong O-H stretch in the IR and zero degrees of unsaturation. The remaining structure is determined by 'H NMR. (c) Predicted Structure C (label hydrogens with...
V. Draw the structures of Compound 23A (6 pts), Compound 23B (6 pts) and clearly indicate your assignments of all proton resonances using the lower case letter associated with the signal (6 pts). Calculate the Unsaturation Index of each compound (2 pts) (20 points total) 1.24 3.0 1.26 2.5 e = 1.25 ppm doublet, 6H 2.0 a = 10.0 ppm 1.5 Compound 23a: C10H420 singlet, 1H 10.00 7.83 7.85 7.09 7.07 1.0 Unsat. Index = (2C+2-H-X+N)/2 = X=number of halogens...
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