Homework Answers
Add Answer to:
b. NMR and IR When the second student runs a 'H NMR of the reaction (shown...
HO HW2. A student ran the Grignard reaction below: CH3MgBr diethyl ether 2-pentanone 2-methyl-2-pentanol HW 3....
HO HW2. A student ran the Grignard reaction below: CH3MgBr diethyl ether 2-pentanone 2-methyl-2-pentanol HW 3. A second student tries to run the same Grignard reaction as in HW 2 and obtains the following FT-IR spectrum: ) transmittance 000 2000 1500 1000 wavenumber(cm) a. Based solely on the IR data, did the second student's reaction go to completion? In other words, was all of the ketone starting material used up? Yes or No and explain. b. When the second student...
HW4. A student ran a reaction and obtained the following data for an unknown by-product C that contains...
HW4. A student ran a reaction and obtained the following data for an unknown by-product C that contains an alcohol functionality. Alcohol C was purified by column chromatography. Fill in the data below Molecular Formula of C (derived by Mass Spec. analysis): C&H14O The degrees of unsaturation is: Given the degrees calculated, this means: (a) (b) The FT-IR for the unknown alcohol C 100 50- 0- 1000 2000 wavenumber (cm) 3000 1500 500 4000 Bond vibration (e.g. stretch or bend)...
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...
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...
21. Propose a structure for compound HALLOWEEN with a formula CsH1002 with the following 'H NMR...
21. Propose a structure for compound HALLOWEEN with a formula CsH1002 with the following 'H NMR spectrum and IR spectrum. NAVENTER Area Chem Shift Splitting singlet multiplet multiplet doublet triplet Ppm
just the circled ones only 8.10 Suggest structures consistent with the following 'H NMR data: a....
just the circled ones only
8.10 Suggest structures consistent with the following 'H NMR data: a. Сно triplet (1.0 ppm, 3H) singlet (2.1 ppm, 3H) quartet (2.4 ppm, 2H) b. С Н.о, triplet (1.2 ppm, 3H) singlet (2.1 ppm, 3H) quartet (4.1 ppm, 2H) усно singlet (2.4 ppm, 3H) multiplet (7.5 ppm, 5H) singlet (1.6 ppm, 6H) singlet (3.1 ppm, 2H) multiplet (7.3 ppm, 5H) 1. Сно, triplet (1.2 ppm, 3H) singlet (2.4 ppm, 3H quartet (4.2 ppm, 2H) ....
Determine the compound using the Mass Spec, IR, C NMR, and H NMR. H Nmr splitting...
Determine the compound using the Mass Spec, IR, C NMR, and H
NMR.
H Nmr splitting pattern from left to right: singlet, triplet,
septet (7), singlet, doublet
Compound 1 Mass Spec: Mpeak : 162 IR: 100 - TRANSMETTANCEI21 DO 4000 2000 2000 1500 1500 - 1000 13C NMR: Broadband in provided below. DEPT data is in the provided table. 200.180.160.140 120 100.80 '60.40.20 PPM DEPT -135 positive DEPT-90 positive -------------- PPM 191 149 138 137 135 128 126 | 34...
4. Consider the following two diastercomers: Both compounds generate 'H NMR spectra with the following signals:...
4. Consider the following two diastercomers: Both compounds generate 'H NMR spectra with the following signals: A multiplet between 7.20-7.63 ppm with an integration of 5H Two separate doublets between 5.70-6.50 ppm, each with an integration of 1H A singlet around 1.30 ppm with an integration of 9H Despite the similarities, how could you differentiate between the H NMR spectra of these isomers? 5. Assign each set of protons to their appropriate signals in the 'H NMR spectrum shown below....
NMRR The 'H NMR for the unknown 0.0 7.5 7.0 6.5 6.0 5 5 .0 4.5...
NMRR The 'H NMR for the unknown 0.0 7.5 7.0 6.5 6.0 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 Chemical Shift Neighbors (A) Splitting pattern (+1) (report as singlet/doublet/tripletlete. (היי 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. (6) Predicted Structure C (label hydrogens with letter for assignment below):
Compound is a liquid, boiling point 136 C. The Mass, IR, and H NMR spectra, along with C NMR data, are given below....
Compound is a liquid, boiling point 136 C. The Mass, IR, and H NMR spectra, along with C NMR data, are given below. Elemental Analysis: C, 90.51; H, 9.49. Mass Spectrum 106 30 50 70 500 110 120 130 140 150 100 170 ao 10 2001 mie Infrared Spectrum Wave Number, om 4000 3000 2500 2000 1500 1300 1200 100 1000 900 10 13 11 Wavelength, microns H NMR 2 pom, & Structure: C Spectral Data: singlet, 140.2 ppm doublet,...
HO HW2. A student ran the Grignard reaction below: CH3MgBr diethyl ether 2-pentanone 2-methyl-2-pentanol HW 3. A second student tries to run the same Grignard reaction as in HW 2 and obtains the following FT-IR spectrum: ) transmittance 000 2000 1500 1000 wavenumber(cm) a. Based solely on the IR data, did the second student's reaction go to completion? In other words, was all of the ketone starting material used up? Yes or No and explain. b. When the second student...
HW4. A student ran a reaction and obtained the following data for an unknown by-product C that contains an alcohol functionality. Alcohol C was purified by column chromatography. Fill in the data below Molecular Formula of C (derived by Mass Spec. analysis): C&H14O The degrees of unsaturation is: Given the degrees calculated, this means: (a) (b) The FT-IR for the unknown alcohol C 100 50- 0- 1000 2000 wavenumber (cm) 3000 1500 500 4000 Bond vibration (e.g. stretch or bend)...
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...
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...
21. Propose a structure for compound HALLOWEEN with a formula CsH1002 with the following 'H NMR spectrum and IR spectrum. NAVENTER Area Chem Shift Splitting singlet multiplet multiplet doublet triplet Ppm
just the circled ones only
8.10 Suggest structures consistent with the following 'H NMR data: a. Сно triplet (1.0 ppm, 3H) singlet (2.1 ppm, 3H) quartet (2.4 ppm, 2H) b. С Н.о, triplet (1.2 ppm, 3H) singlet (2.1 ppm, 3H) quartet (4.1 ppm, 2H) усно singlet (2.4 ppm, 3H) multiplet (7.5 ppm, 5H) singlet (1.6 ppm, 6H) singlet (3.1 ppm, 2H) multiplet (7.3 ppm, 5H) 1. Сно, triplet (1.2 ppm, 3H) singlet (2.4 ppm, 3H quartet (4.2 ppm, 2H) ....
Determine the compound using the Mass Spec, IR, C NMR, and H
NMR.
H Nmr splitting pattern from left to right: singlet, triplet,
septet (7), singlet, doublet
Compound 1 Mass Spec: Mpeak : 162 IR: 100 - TRANSMETTANCEI21 DO 4000 2000 2000 1500 1500 - 1000 13C NMR: Broadband in provided below. DEPT data is in the provided table. 200.180.160.140 120 100.80 '60.40.20 PPM DEPT -135 positive DEPT-90 positive -------------- PPM 191 149 138 137 135 128 126 | 34...
4. Consider the following two diastercomers: Both compounds generate 'H NMR spectra with the following signals: A multiplet between 7.20-7.63 ppm with an integration of 5H Two separate doublets between 5.70-6.50 ppm, each with an integration of 1H A singlet around 1.30 ppm with an integration of 9H Despite the similarities, how could you differentiate between the H NMR spectra of these isomers? 5. Assign each set of protons to their appropriate signals in the 'H NMR spectrum shown below....
NMRR The 'H NMR for the unknown 0.0 7.5 7.0 6.5 6.0 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 Chemical Shift Neighbors (A) Splitting pattern (+1) (report as singlet/doublet/tripletlete. (היי 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. (6) Predicted Structure C (label hydrogens with letter for assignment below):
Compound is a liquid, boiling point 136 C. The Mass, IR, and H NMR spectra, along with C NMR data, are given below. Elemental Analysis: C, 90.51; H, 9.49. Mass Spectrum 106 30 50 70 500 110 120 130 140 150 100 170 ao 10 2001 mie Infrared Spectrum Wave Number, om 4000 3000 2500 2000 1500 1300 1200 100 1000 900 10 13 11 Wavelength, microns H NMR 2 pom, & Structure: C Spectral Data: singlet, 140.2 ppm doublet,...
Most questions answered within 3 hours.
-
1) Use the Euclidean algorithm (write in pseudocode) to find the
greatest common divisor of 8...
asked 13 minutes ago -
Based upon the corporate proposal for this week, research three
different data storage options for your...
asked 15 minutes ago -
The equilibrium constant, Kp , for the following reaction is
1.04×10-2 at 548 K. NH4Cl(s) NH3(g)...
asked 34 minutes ago -
During a recent budgeting discussion, the CFO at "NW Accounting
Services" proposed eliminating the marketing research...
asked 33 minutes ago -
Block B has a mass of 3.80kg and is moving to the left at a
speed...
asked 37 minutes ago -
If n distinct objects are distributed randomly into
n distinct boxes, what is the probability that:...
asked 38 minutes ago -
a) The frequency of light coming out from a laser source is 297
MHz. What is...
asked 1 hour ago -
LABORATORY EXERCISES:
Using nested for loops, write a java program to print the
pattern as shown...
asked 1 hour ago -
Assume that the correlation coefficient between achievement test
scores (X) and grade point averages (Y) among...
asked 1 hour ago -
In Chapter 1 titled "So Close and Yet So Different", in "Why
Nations Fail" authors bring...
asked 1 hour ago -
Leadership Philosophy
Write a two-page paper identifying your personal leadership
philosophy based on your new perspective...
asked 1 hour ago -
Which of these function correctly defines the function g(),
which should return a pointer to a...
asked 1 hour ago