Just need help with question D and E   Other information available: The molecule does not react with bromine in chloroform but can be brominated using bromine and FeBr3, and three different monobromo products are obtained. The number of H’s in the compound have to be a multiple of what integer?  The number of C’s in the compound have to be a multiple of what integer?  What is the maximum number of C’s that can be in the compound? Explain how you determined the maximum number of C’s in the compound What functional groups are present in the compound (alkyl, aryl, ketone, etc.)?  Explain your answer by referring to the information provided above.  Given your answers to a-c above write a molecular formula consistent with all the data presented.  Draw a structure for the unknown compound that is consistent with the data above

Organic Chemistry
8th Edition
ISBN:9781305580350
Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Chapter14: Mass Spectrometry
Section: Chapter Questions
Problem 14.24P
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Just need help with question D and E

 

Other information available:
The molecule does not react with bromine in chloroform but can be brominated using bromine and FeBr3, and three different monobromo products are obtained.

  1. The number of H’s in the compound have to be a multiple of what integer? 

  2. The number of C’s in the compound have to be a multiple of what integer?  What is the maximum number of C’s that can be in the compound? Explain how you determined the maximum number of C’s in the compound

  3. What functional groups are present in the compound (alkyl, aryl, ketone, etc.)?  Explain your answer by referring to the information provided above. 

  4. Given your answers to a-c above write a molecular formula consistent with all the data presented. 

  5. Draw a structure for the unknown compound that is consistent with the data above 

The Mass spec of the compound has a molecular ion peak at m/z = 178 and a base peak at m/z =
178 (yes, the same value). The proton NMR showed the following:
Signal Shift (ppm)
Integration
8.4
8.0
7.4
A
B
C
There are four C-13 signals: 125, 126, 128, and 132 ppm. (A simple C13 chart is provided at the
end of the exam.) The integrations for the four C13 peaks are 2:2:1:2 respectively.
The IR Spectrum is presented below (black vertical line at 3000 cm¹ was drawn in):
INFRARED SPECTRUM
wwwwwwww
0.8
0.6
0.4
Splitting
Singlet
1
Doublet
2
Doublet of Doublets 2
3000
2000
Wavenumber (cm-1)
1000
Transcribed Image Text:The Mass spec of the compound has a molecular ion peak at m/z = 178 and a base peak at m/z = 178 (yes, the same value). The proton NMR showed the following: Signal Shift (ppm) Integration 8.4 8.0 7.4 A B C There are four C-13 signals: 125, 126, 128, and 132 ppm. (A simple C13 chart is provided at the end of the exam.) The integrations for the four C13 peaks are 2:2:1:2 respectively. The IR Spectrum is presented below (black vertical line at 3000 cm¹ was drawn in): INFRARED SPECTRUM wwwwwwww 0.8 0.6 0.4 Splitting Singlet 1 Doublet 2 Doublet of Doublets 2 3000 2000 Wavenumber (cm-1) 1000
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