Spectrum No.3 The infrared spectrum of this compound shows abroad peak at 3370 cm³¹. There is also a strong peak at 1159 cm³¹, the mass spectrum shows no molecular ion peak. You will have to deduce the molecular weight from the heaviest fragment peak which arises from the loss of a methyl group from the molecular ion. Give the mechanism that lead to the formation of ion fragment at m/z= 59

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Spectrum No.3
The infrared spectrum of this compound shows abroad peak at 3370 cm ¹. There is also a strong peak
at 1159 cm¹, the mass spectrum shows no molecular ion peak. You will have to deduce the
molecular weight from the heaviest fragment peak which arises from the loss of a methyl group
from the molecular ion.
Give the mechanism that lead to the formation of ion fragment at m/z= 59
Relative Intensity
100-
Relative Intensity
80-
60-
40-
20
0-mmmmm
10
100-
80
60-
40
18-N-3387
20-
20
15--0930
0-T
10
30
20
Spectrum No.4
The mass of the molecular ion for this unknown has an odd value and the IR spectrum shows two
close bands in the 3450 cm³¹ region
Give the mechanism that lead to the formation of ion fragment at m/e= 30
(30)
40
30
50
40
59
60
m/z
50
m/z
70
60
80
M(73)
90
70
101
80
rytter
100
90
3/5
Transcribed Image Text:Spectrum No.3 The infrared spectrum of this compound shows abroad peak at 3370 cm ¹. There is also a strong peak at 1159 cm¹, the mass spectrum shows no molecular ion peak. You will have to deduce the molecular weight from the heaviest fragment peak which arises from the loss of a methyl group from the molecular ion. Give the mechanism that lead to the formation of ion fragment at m/z= 59 Relative Intensity 100- Relative Intensity 80- 60- 40- 20 0-mmmmm 10 100- 80 60- 40 18-N-3387 20- 20 15--0930 0-T 10 30 20 Spectrum No.4 The mass of the molecular ion for this unknown has an odd value and the IR spectrum shows two close bands in the 3450 cm³¹ region Give the mechanism that lead to the formation of ion fragment at m/e= 30 (30) 40 30 50 40 59 60 m/z 50 m/z 70 60 80 M(73) 90 70 101 80 rytter 100 90 3/5
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