Carbon NMR Flashcards
1
Q
- How many signals appear in proton-decoupled 13C NMR spectrum of 3,4-dimethylhexane?
A. 3
B. 4
C. 5
D. 6
A
B. 4
2
Q
- How many signals appear in proton-decoupled 13C NMR spectrum of 2,5-dimethylhexane?
A. 3
B. 4
C. 5
D. 6
A
A. 3
3
Q
- How many signals appear in the proton-decoupled 13C NMR spectrum of 1,4-dibromobenzene?
A. 1
B. 2
C. 3
D. 4
A
B. 2
4
Q
- How many signals appear in the proton-decoupled 13C NMR spectrum of 1,3-dibromobenzene?
A. 1
B. 2
C. 3
D. 4
A
D. 4
5
Q
- How many signals appear in the proton-decoupled 13C NMR spectrum of 1,2-dibromobenzene?
A. 1
B. 2
C. 3
D. 4
A
C. 3
6
Q
- How many signals appear in the proton-decoupled 13C NMR spectrum of 4-bromotoluene?
A. 3
B. 4
C. 5
D. 7
A
C. 5
7
Q
- How many signals appear in the proton-decoupled 13C NMR spectrum of 3-bromotoluene?
A. 3
B. 4
C. 5
D. 7
A
D. 7
8
Q
- How many signals appear in the proton-decoupled 13C NMR spectrum of 2-bromotoluene?
A. 3
B. 4
C. 5
D. 7
A
D. 7
9
Q
- Which C4H9Br compound(s) gives a 13C NMR spectrum consisting of four signals?
A
B. only 1 and 2
10
Q
- Which C4H9Br compound(s) gives a 13C NMR spectrum consisting of two signals?
A
B. only 2
11
Q
- Which of the following compounds gives a 1H NMR spectrum consisting of two singlets and a 13C NMR consisting of consisting of three signals?
A
C. only ii and iii
12
Q
- Which of the following compounds would give a 1H NMR spectrum consisting of two singlets and a 13C NMR consisting of consisting of three signals?
A
D. iii and iv
13
Q
- How many signals appear in the proton-decoupled 13C NMR spectrum of the following compound?
A
C. 9
14
Q
- How many signals appear in the proton-decoupled 13C NMR spectrum of the following compound?
A
B. 7
15
Q
- Which of the carbon atoms in the following molecule appears furthest downfield in the 13C NMR spectrum?
A
C. iii
16
Q
- Which of the carbon atoms in the molecule appears furthest downfield in the 13C NMR spectrum?
A
D. iv
