2. The following spectra for A and B correspond to two structural isomers with a molecular formula of C.H,N. The NMR singlet at 81.16 in spectrum A disappears when the sample is shaken with Dr0. The singlet at 80.60 ppm in the spectrum of B disappears on shaking with D20. Propose structures for these isomers, and explain how it is consistent with the observed absorptions. wavelength (pum) 25 100 3.5 4,5 9 10 U 12 13 14 15 16 5.5 6. 80 60 40 20 4000 3500 3000 2500 2000 I800 1400 1000 S00 waverumber icm 200 180 160 140 120 60 40
2. The following spectra for A and B correspond to two structural isomers with a molecular formula of C.H,N. The NMR singlet at 81.16 in spectrum A disappears when the sample is shaken with Dr0. The singlet at 80.60 ppm in the spectrum of B disappears on shaking with D20. Propose structures for these isomers, and explain how it is consistent with the observed absorptions. wavelength (pum) 25 100 3.5 4,5 9 10 U 12 13 14 15 16 5.5 6. 80 60 40 20 4000 3500 3000 2500 2000 I800 1400 1000 S00 waverumber icm 200 180 160 140 120 60 40
Chapter13: Structure Determination: Nuclear Magnetic Resonance Spectroscopy
Section13.SE: Something Extra
Problem 59GP: The mass spectrum and 13C NMR spectrum of a hydrocarbon are shown. Propose a structure for this...
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