Homework Answers
a. Chemical shift of an individual peak is at 4.0 ppm.
b. Integration value of the above peak is 3.00
c. TMS peak is at 0 ppm.
d.
TMS peak at 0 ppm is s(singlet)
A peak at 1.5 ppm is t(triplet)
A peak at 2.2 ppm is s(singlet)
A peak at 4.0 ppm is q(quartet)
Peak between 6.5 to 8.0 ppm is m(multiplet)
Chemical shift is determined by the value ppm scale corresponding to the peak. Integration values of the peaks are given in the region bellow the peaks and above the ppm scale. TMS peak general comes at 0 ppm and it is taken as a reference peak for other peaks.
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tant parts of the NMR spectrum shown below: a. Chemical shift for an individual peak (pick...
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Draw the expected H NMR spectrum for each molecule. Pay
attention to the chemical shift and splitting. Mark the integration
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Draw the expected H NMR spectrum for each molecule. Pay
attention to the chemical shift and splitting. Mark the integration
of each peak. Then assign each peak in the NMR to hydrogen atoms in
the structure.
HyC 0 ppm 192 t2 .3 +5 o t6 O=C +7 C=O +8
4. Draw a clear and accurate NMR spectrum for the molecule shown below. Clearly show the number of peaks, and the integration, chemical shift and splitting of each peak. PP 5. Use the chemspider.com to look up the NMR spectrum for the compound in 4. Compare that spectrum to your answer in 4. Draw that spectrum here, explaining the differences between the actual spectrum and what you predicted. Don't worry if you what you initially drew was incorect PPM
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