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40
Spectroscopy Problems
Copyright © 2017 Pearson Education, Inc.
64.
A compound with molecular formula C
14
H
20
O
2
gives the
1
H NMR spectrum shown below. Identify the
compound. Important IR data are given below.
IR Data:
3030 cm
-
1
medium
1500
cm
-
1
sharp, medium
1690
cm
-
1
strong
1380
cm
-
1
medium
1600
cm
-
1
sharp, medium
0
1
2
3
4
5
6
7
8
9
1
1
2
2
6
6
2
65.
Compound A, with molecular formula C
10
H
12
O, gives the
1
H NMR spectrum shown below. Identify the
compound. Important IR data are given below.
IR Data:
1703 cm
-
1
(strong absorption)
2700–2800 cm
-
1
(two week absorptions)
1500
and 1600 cm
-
1
(two medium absorptions)
1
10
9
8
7
6
5
4
3
2
1