Predict the number of signals on the proton and carbon NMRs of the following compounds.
1. For the following molecules give the number of proton and carbon signals and for the proton signals give the relative intensities and their multiplicities (i.e. the spin-spin splittings). (10 pts) BONUS (4 pts) CH CH -C He Would the protons labeled Ha and He have the same chemical shifts or different chemical shifts? Briefly explain your answer
Predict the proton nmr spectra for each of the following
structures.
Number of signals:
Relative area:
Splitting pattern (S,T,Q etc)
4 5 6
PART 1 - For the following compounds A. Predict how many signals would be detected in the expected 'H NMR spectrum. B. Label proton groups and determine their multiplicity. c. Predict the chemical shifts of each signal in the expected 'H NMR spectrum of the following compounds from the correlation chart in the last page. <Example> Number of signals O Proton groups Multiplicity Triplet B Multiplet (sextet) c Triplet D Singlet Chemical Shirt (ppm) 0.8-1.0 1.2 - 1.5 3.2 4.0...
Assign proton signals in spectrum to hydrogens in the molecular
structure and predict the multiplicity of the signals.
Assign proton signals in spectrum to hydrogens in the molecular structure Predict multiplicity of the signal:s 9 8 7 6 5 4 3 2 0 1-02-117 ppm
Predict H NMR
number of signals?
splitting?
approx. location of sifnals on spectra?
which signals belong to which proton?
НО
How many^13 C carbon NMR signals will the following compounds show?
In the space provided below, predict the NMR spectrum for each of the following compounds. Give the approximate chemical shift (8), the splitting pattern (doublet, triplet, etc.), and the relative signal integration for the 'H NMR signals. be observed in the 13C spectrum. Give the number of carbon signals that would Cl Cl
II Indicate the number of signals in 'H NMR and 3C NMR of the following compounds. And mark the multiplicity on each proton directly not in the table (s- singlet, d-doublet, t-triplet, q-quartet, p-pentet, h-hextet, m-multiplet....) a. b. d. CI Cl CI Ci a. b. C. d. H NMR signals 13C NMR
Please explain how the number
of proton NMR signals are identified
Testbank Question 106 x Your answer is incorrect. Try again. Which compound below would give rise to 3 signals in the proton NMR spectrum and 4 signals in the carbon NMR spectrum? (Assume you can separate and see all peaks.) None of the above.
How many unique 'H NMR and 13C NMR signals exist for the following compounds? 0a TH NMR signals Number Number Number Number Number 13C NMR signals Number Number Number Number Number