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How many signals would you expect to appear in an 1H NMR spectrum of the following compound? 3 2 O O 4 C I

Macroscale and Microscale Organic Experiments

7th Edition

ISBN:9781305577190

Author:Kenneth L. Williamson, Katherine M. Masters

Publisher:Kenneth L. Williamson, Katherine M. Masters

Chapter45: Synthesis And Bioassay Of Sulfanilamide And Derivatives

Section: Chapter Questions

Problem 5Q

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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.

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How many signals would you expect to appear in an 1H NMR spectrum of the following
compound?
03
02
04
O 1

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A compound of unknown structure gave the following spectroscopic data: Mass spectrum: M+=88.1 IR: 3600 cm-1 1Î—NMR: 1.4 Î´ (2 H, quartet, J=7 Hz); 1.2 Î´ (6H, singlet): 1.0 Î´ (1 H, singlet); 0.9 Î´ (3 H, triplet, J=7 Hz) 13CNMR: 74, 35, 27, 25 Î´ (a) Assuming that the compound contains C and H but may or may not contain O, give three possible molecular formulas (b) How many protons (H) does the compound contain? (c) What functional groups(s) does the compound contain? (d) How many carbons does the compound contain? (e) What is the molecular formula of the compound? (f) What is the structure of the compound? (g) Assign peaks in the moleculeâ€™s 1HNMR spectrum corresponding to specific protons.
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Sketch what you might expect the 1H and 13C NMR spectra of the following compound to look like (green = Cl):
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