100 HS--2064 80 - 20- 25 50 75 100 125 150 175 m/z Mass spectrum for unknown. 100 1000 VENERd IR snectrum for unknown Relative Intensity

Fundamentals Of Analytical Chemistry
9th Edition
ISBN:9781285640686
Author:Skoog
Publisher:Skoog
Chapter31: Introduction To Analytical Separations
Section: Chapter Questions
Problem 31.27QAP
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Given the spectral data included in this problem and that the molecular formula is C4H5O2, determine the most likely structure using your understanding of carboxylic acid properties and spectroscopy. Show all of your work for partial credit, including:

a.) labeling the IR spectrum with the relevant bond stretches,

b.) indicating the relevant mass spectrum molecular ion and any relevant fragments,

c.) providing a legible structure of the final product and name the compound.

 

14
12
10
8
1H-NMR spectrum for unknown (integrations and number of signals included below).
Assign.
Shift(ppm)
A
12.1
B
2.766
*1
1.91
*1
1.84
*2
1.716
F
*2
1.597
200
140
120
100
80
40
13C-NMR of unknown (no overlapping peaks)
Transcribed Image Text:14 12 10 8 1H-NMR spectrum for unknown (integrations and number of signals included below). Assign. Shift(ppm) A 12.1 B 2.766 *1 1.91 *1 1.84 *2 1.716 F *2 1.597 200 140 120 100 80 40 13C-NMR of unknown (no overlapping peaks)
100
HS-N-2064
80
60
40
20
uhudndu
125
25
50
75
100
150
175
m/z
Mass spectrum for unknown.
CH0
000
1000
KRVENUERI
IR snectrum for unknown
Relative Intensity
Transcribed Image Text:100 HS-N-2064 80 60 40 20 uhudndu 125 25 50 75 100 150 175 m/z Mass spectrum for unknown. CH0 000 1000 KRVENUERI IR snectrum for unknown Relative Intensity
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