In the NMR tables below, list the chemical shift, the splitting, and the number
ID: 1039381 • Letter: I
Question
In the NMR tables below, list the chemical shift, the splitting, and the number of hydrogens associated with each peak for each compound.
PEAK
SHIFT
MULTIPLICITY
H
PEAK
SHIFT
MULTIPLICITY
H
1
7
2
8
3
9
4
10
5
11
6
12
Using the peak information you listed in the tables for both structures, assign each peak to that portion of the structure that produces the peak in the NMR spectrum.
PLEASE WRITE LEGIBLY.
PEAK
SHIFT
MULTIPLICITY
H
PEAK
SHIFT
MULTIPLICITY
H
1
7
2
8
3
9
4
10
5
11
6
12
Common Name: 3-Ethoxy-1-butene IUPAC Name: 3-Ethory-1-butene CAS No.: 1476-08-0 Zoom Out ALDR CH Solvent: Non Polar BP: 7700 MP: -87.00 1.00 0.90 0.80 0.70 0.60 0.50 0.40 0.30 0.20 0.10 0.00 10.0 9.0 8.0 6.0 5.0 4.0 3.0 2.0 0.0 0.5 No. No. No. No. No. 4 105.61 5 158.41 6 158.41 OK 2 105.61 3 53.341Explanation / Answer
spin-spin splitting: s=singlet, 2=doublet, 3=trtiplet, q=quartet, m=multiplet, dd= doublet of doublet, ddd=doublet of doublet of doublet,
1] 3-Ethoxy-1-butene
Signal Height 53 ~ 1 H, ~105 ~ 2 H's, 158 ~ 3H's (Divide all height values by smallest height value to get the number of protons associated with each signal)
2] 1-Ethoxy-2-butene
3] Methyl phenylacetate (Ph-CH2-COOCH3)
4] Benzoic acid ethyl ester
Signal No. Chemical Shift Multiplicity/spin-spin splitting Hydrogens 1 5.45 m 1 2 5.1 m 2 3 3.9 m 1 4 3.55 q 2 5 1.13 d 3 6 1.12 t 3