Add 1,4-dibromo-2-butene (Halides folder) to the RBF and then drag a sample tube to the clamp stand. Collect the mass spectrum by dragging the cursor from the mass spectrometer to the RBF; make note of the M+ and base signals. Take the ¹H and 13C NMR spectra of the sample by dragging the cursor from the spectrometer (set to the appropriate nucleus) to the RBF. Make notes on how many signals and the chemical shifts in each spectrum. Match the information you have gathered to the statements given below. A) The carbon spectrum contains two signals at 32.70 and 131.90 B There are only two signals in the carbon spectrum because the molecule is symmetrical C The signals in the proton spectrum are of equal height D) The two signals in the proton spectrum are in a 1 to 2 ratio E The mass spectrum shows M+, M+ + 2, and M+ +4 signals for the Br isotopes present F) The base signals in the mass spectrum correspond to loss of both bromine atoms

Add 1,4-dibromo-2-butene (Halides folder) to the RBF and then drag a sample tube to the clamp stand. Collect the mass spectrum by dragging the cursor from the mass spectrometer to the RBF; make note of the M+ and base signals. Take the ¹H and 13C NMR spectra of the sample by dragging the cursor from the spectrometer (set to the appropriate nucleus) to the RBF. Make notes on how many signals and the chemical shifts in each spectrum. Match the information you have gathered to the statements given below. A) The carbon spectrum contains two signals at 32.70 and 131.90 B There are only two signals in the carbon spectrum because the molecule is symmetrical C The signals in the proton spectrum are of equal height D) The two signals in the proton spectrum are in a 1 to 2 ratio E The mass spectrum shows M+, M+ + 2, and M+ +4 signals for the Br isotopes present F) The base signals in the mass spectrum correspond to loss of both bromine atoms

Organic Chemistry

9th Edition

ISBN:9781305080485

Author:John E. McMurry

Publisher:John E. McMurry

Chapter13: Structure Determination: Nuclear Magnetic Resonance Spectroscopy

Section13.5: Integration Of 1h Nmr Absorptions: Proton Counting

Problem 8P: How many peaks would you expect in the 1H NMR spectrum of 1, 4-dimethyl- benzene (para-xylene, or...

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