Figure 1 shows the following spectrum of a compound with formula C5H10O, with interesting coupling patterns at 2.4 and 9.8 ppm. Expansions of these two peaks are shown in Figure 2. Expansions of the other patterns (not shown) are given as follows: 0.92 ppm(triplet), 1.45 ppm (sextet), and 1.61 ppm (quintet). 1.Draw the structure of the compound. 2.Assign the proton signals in the 1H NMR spectrum according to the answer in3(a). 3.Draw tree diagrams of the peaks at 2.4 and 9.8 ppm. 4.Assign the coupling constants of the peaks at 2.4 and 9.8 ppm in tree diagram3(c).
Figure 1 shows the following spectrum of a compound with formula C5H10O, with interesting coupling patterns at 2.4 and 9.8 ppm. Expansions of these two peaks are shown in Figure 2. Expansions of the other patterns (not shown) are given as follows: 0.92 ppm(triplet), 1.45 ppm (sextet), and 1.61 ppm (quintet). 1.Draw the structure of the compound. 2.Assign the proton signals in the 1H NMR spectrum according to the answer in3(a). 3.Draw tree diagrams of the peaks at 2.4 and 9.8 ppm. 4.Assign the coupling constants of the peaks at 2.4 and 9.8 ppm in tree diagram3(c).
Organic Chemistry: A Guided Inquiry
2nd Edition
ISBN:9780618974122
Author:Andrei Straumanis
Publisher:Andrei Straumanis
ChapterL3: Carbon (13c) Nmr Spectroscopy
Section: Chapter Questions
Problem 12CTQ
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Figure 1 shows the following spectrum of a compound with formula C5H10O, with interesting coupling patterns at 2.4 and 9.8 ppm. Expansions of these two peaks are shown in Figure 2. Expansions of the other patterns (not shown) are given as follows: 0.92 ppm(triplet), 1.45 ppm (sextet), and 1.61 ppm (quintet).
1.Draw the structure of the compound.
2.Assign the proton signals in the 1H NMR spectrum according to the answer in3(a).
3.Draw tree diagrams of the peaks at 2.4 and 9.8 ppm.
4.Assign the coupling constants of the peaks at 2.4 and 9.8 ppm in tree diagram3(c).
Transcribed Image Text:300 MHz
3H
1H
2H
2H 2H
Rajah 1: 'H Spektrum NMR
Figure 1: 'H NMR Spectrum
74 H2
19H2
spacings
9.8 ppm
24 ppm
Rajah 2: Pengembangan Rajah 1
Figure 2: Expansion of Figure 1
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