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Interpretation:
The structures for the compounds G and H are to be proposed.
Concept introduction:
The basic principle of NMR is that nuclei having spin value greater than zero when placed in an external magnetic field is applied, an energy transfer occurs between the base energy to the higher energy level A few elements such as
Chemical shift is the measurement on the
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Chapter 9 Solutions
ORGANIC CHEM. VOL.1+2-W/WILEYPLUS
- The mass spectrum and 13C NMR spectrum of a hydrocarbon are shown. Propose a structure for this hydrocarbon, and explain the spectral data.arrow_forwardThe following 1H NMR peaks were recorded on a spectrometer operating at 200 MHz. Convert each into δ units. (a) CHCl3; 1454 Hz (b) CH3Cl; 610 Hz (c) CH3OH; 693 Hz (d) CH2Cl2; 1060 Hzarrow_forward7. Which of the molecules below correspond to which of the 'H NMR spectra? Explain your choice. Note that in both spectra below, the peaks are singlets of 3H or 9H. FUX 18 # 3H A Denting 3 10 9 8 7 6 5 4 OCH 3 4 +2 9H 1 1 B J 3H Cada 3 2 7 6 5 4 10 9 8 7 9H 1arrow_forward
- How many peaks would the 1H NMR spectrum of the following molecule have?arrow_forwardhow many peaks would you expect to see in the 13C NMR spectrum of this substance ?arrow_forwardThe 1H NMR spectrum, 13C NMR spectrum, mass spectrum, and IR spectrum below belong to a chemical with the molecular formula C7H16O. Provide a structure for that compound. You must explain how you determined the structurearrow_forward
- How many signals do you expect to see in the 1H NMR spectrum?arrow_forwardA compound of molecular formula CgH,402 gives three NMR signals having the indicated integration values: signal [A] 14 units, signal [B] 12 units, and signal [C] 44 units. How many protons give rise to each signal?arrow_forwardFor the 1 H NMR spectrum of unknown compound 2, choose if it matches structures A, B, C or D. Justify your response with your interpretation of the 1H NMR spectrum of unknown compound 2 that led to your answer.arrow_forward
- Complete the table below with the analysis of each of the 1H NMR spectrum signalsarrow_forwardThe number of peaks in the ¹H-NMR spectrum of a com-pound depends on the number of different kinds (environments)of H atoms. How many peaks appear in the spectrum of each iso-mer of C₄H₁₀and of C₅H₁₂arrow_forwardA 13C NMR spectrum is shown below. Match the spectrum with the proper structure.arrow_forward
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