The molecular mass of compound A is 86. In the mass spectrum of A, four signals were observed at m/z 86, 71, 43 and 29. The intensity ratio of these four signals are 1:3: 10:2 respectively. Find the base peak from these four signals. m/z 86 m/z 29 m/z 71 O m/z 43 Predict the frequency shift of the carbonyl absorption in the following aldehydes: H3C. H3C. H3C. он I II III O II > III > I O I> I| > III III > | > || O III > I| > I

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The molecular mass of compound
A is 86. In the mass spectrum of A,
four signals were observed at m/z
86, 71, 43 and 29. The intensity
ratio of these four signals are 1:3:
10:2 respectively. Find the base
peak from these four signals.
m/z 86
m/z 29
m/z 71
O m/z 43
Predict the frequency shift of the
carbonyl absorption in the
following aldehydes:
H3C.
H3C.
H3C.
он
II
III
Il > III > |
O I> I| > III
III > | > ||
III > || > |
Transcribed Image Text:The molecular mass of compound A is 86. In the mass spectrum of A, four signals were observed at m/z 86, 71, 43 and 29. The intensity ratio of these four signals are 1:3: 10:2 respectively. Find the base peak from these four signals. m/z 86 m/z 29 m/z 71 O m/z 43 Predict the frequency shift of the carbonyl absorption in the following aldehydes: H3C. H3C. H3C. он II III Il > III > | O I> I| > III III > | > || III > || > |
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