14.52"H NMR and IR spectra for a compound with the formula C7H¬NO3 are shown in L Figure 14.55.Assign a structure and explain your reasoning.8.38.187.67.4109.876.5432Chemical shift (8, ppm)(a)9184777063564942352821144000.03600320028002400200018001600140012001000800 650.0Wavenumbers, cm¯'(b)

Answered: H NMR and IR spectra for a compound…

H NMR and IR spectra for a compound with the formula C7H7NO3 are shown in Figu Assign a structure and explain your reasoning. 8.3 8.18 7.6 1.4 10 8. 7 5 4 3 1 2. 6

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

NMR Spectroscopy

NMR stands for Nuclear Magnetic Resonance in which the study of different molecules is done based on the interaction of radiofrequency electromagnetic radiations with the nuclei of molecules placed in a strong magnetic field. A precise study of spectra of visible light and all bands of electromagnetic radiation is called spectroscopy.

Question

14.52
"H NMR and IR spectra for a compound with the formula C7H¬NO3 are shown in L Figure 14.55.
Assign a structure and explain your reasoning.
8.3
8.18
7.6
7.4
10
9.
8
7
6.
5
4
3
2
Chemical shift (8, ppm)
(a)
91
84
77
70
63
56
49
42
35
28
21
14
4000.0
3600
3200
2800
2400
2000
1800
1600
1400
1200
1000
800 650.0
Wavenumbers, cm¯'
(b)

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2. Determine the structures of the compounds that give rise to the following spectral data. Draw the structure, label the hydrogens and carbons, assign each peak in the ¹H and ¹³C NMR spectra, and identify major functional group stretches in the IR. a. C4H8O2 IR 25 26 27 28 29 3 ¹H NMR Offset: 2.0 ppm 3.5 N 3800 3600 3400 3200 3000 2800 2600 2400 2200 8 BRI 4.5 6 2000 Wavelength (um) 5 5.5 1800 1600 Wavenumber (cm) 1400 1200 3 1000 4 8 (ppm) Peak Summary: 9.8 (broad s, 1H), 2.35 (t, 2H), 1.68 (sextet, 2H), 0.99, (t, 3H) 13C NMR: 177, 38, 18, 13 2 1.5 PPM 800 13 14 15 16 0 600
7. Identify the structures for the following two isomers with molecular formula C10H12O2. There is an IR stretch at 1718 cm¹ for the compound in part a and 1740 cm¹ for the compound in part b. The 'H NMR spectra are shown below. a. b. 11 10 HSP-01-396 11 10 HSP-02-824 3 2 2 will 9 9 2 8 8 5 7 7 6 6 5 ppm 5 ppm 4 3 2 2 4 3 2 2 3 1 1 0 0
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Question 12
Name the compound
PART 2: NMR SPECTRA #1: C4H,Cl- no important IR peaks are seen. 3.5 2H 3.0 possible structure 2.5 300 MHz 'H NMR In CDC3 2.0 it wa 1.5 2H 2H 1.0 3H 0.5 0.0
Use the following compounds to match its IR spectrum