Compound A, C8H10O, has the IR and 1H NMR spectra shown. Propose a structure consistent with the observed spectra, and label each peak in the NMR spectrum. Note that the absorption at 5.5 î disappears when D2O is added. 1002 80-604020-4000 500 3000 25002000 15001000500Wavenumber (cm-Chem Rel.shiftarea1.162.555.506.743.002.001.002.002032.00TMS10O ppmChemical shift (6)IntensityTransmittance (%)

The question is based on the concept of Spectroscopy. we have to analyse the spectra provided and…

100 2 80- 60 40 20- 4000 500 3000 2500 2000 1500 1000 500 Wavenumber (cm- Chem Rel. shift area 1.16 2.55 5.50 6.74 3.00 2.00 1.00 2.00 203 2.00 TMS 10 O ppm Chemical shift (6) Intensity Transmittance (%)

100 2 80- 60 40 20- 4000 500 3000 2500 2000 1500 1000 500 Wavenumber (cm- Chem Rel. shift area 1.16 2.55 5.50 6.74 3.00 2.00 1.00 2.00 203 2.00 TMS 10 O ppm Chemical shift (6) Intensity Transmittance (%)

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter27: Molecular Fluorescence Spectroscopy

Section: Chapter Questions

Problem 27.7QAP

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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

Compound A, C₈H₁₀O, has the IR and ¹H NMR spectra shown. Propose a structure consistent with the observed spectra, and label each peak in the NMR spectrum. Note that the absorption at 5.5 î disappears when D₂O is added.

100
2 80-
60
40
20-
4000 500 3000 2500
2000 1500
1000
500
Wavenumber (cm-
Chem Rel.
shift
area
1.16
2.55
5.50
6.74
3.00
2.00
1.00
2.00
203
2.00
TMS
10
O ppm
Chemical shift (6)
Intensity
Transmittance (%)

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