Which of the following C5H8 compounds best fits the spectrum. The integration values are shown above the individual resonances. 1.00 C3H3 3.00 1.99 1.98 4.5 4 3.5 2.5 1.5 0'5 A) CH;CH,CH,-CEC-H B) CH;CH,-CEC-H CH3 D) A O O O

Which of the following C5H8 compounds best fits the spectrum. The integration values are shown above the individual resonances. 1.00 C3H3 3.00 1.99 1.98 4.5 4 3.5 2.5 1.5 0'5 A) CH;CH,CH,-CEC-H B) CH;CH,-CEC-H CH3 D) A O O O

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

ChapterL3: Carbon (13c) Nmr Spectroscopy

Section: Chapter Questions

Problem 12CTQ

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Question

Which of the following C5H8 compounds best fits the spectrum. The integration values are shown above the individual resonances.
1.00
3.00
1.99
1.98
4.5
4
3.5
3
2.5
2
1.5
1
0.5
А) CH,CH,CH,-СЕС-Н
B) CH;CH,-CEC-H
CH3
C)
D)
A
В
C
D

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By correlating chemical shift values and splitting of proton NMR signal with the individual proton atoms of molecule we can assign the molecule.

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