NMR Interpretation questions:
Posted: Wed Apr 27, 2022 6:14 am
NMR Interpretation questions:
2. Given the following spectral data for an unknown compound with the molecular formula C3H6O2 propose a structure, justifying your conclusion. T 7 10 9 8 6 5 4 3 2 1 0 Chemical Shift (ppm) 2.0 3.6 Multiplicity Singlet Singlet Integral 3 3 CHO 100 1 mm D 4000 000 10.00 60677 1926 64 3016 14 2999 01 295) 72 17484 1437 02 1169 41 1278 70 1245 1048 44 90104 144 54 020 61 640 22 (10 marks)
3. Propose a structure for a compound, C3H7Br, from the following H NMR data Problem R-18F CH,Br 300 MHz 'H NMR spectrum in CDCI, Source: Aldrich Spectra Viewer/Reich ville 1.9 18 1.05 1.00 1.40 1.00 LLLLL 3.40 3.35 10 9 8 7 6 4 3 2 1 0 5 ppm (6 marks) 4. Complete the following table for the 'H NMR that would be expected for the following molecule. CH3 H3C ОН CH3 2-Methyl-2-butanol Multiplicity Integral Chemical Shift (ppm) 0.92 1.20 1.50 1.64 singlet Quartet Give reasons for your answers. (8 marks)
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3. Propose a structure for a compound, C3H7Br, from the following H NMR data Problem R-18F CH,Br 300 MHz 'H NMR spectrum in CDCI, Source: Aldrich Spectra Viewer/Reich ville 1.9 18 1.05 1.00 1.40 1.00 LLLLL 3.40 3.35 10 9 8 7 6 4 3 2 1 0 5 ppm (6 marks) 4. Complete the following table for the 'H NMR that would be expected for the following molecule. CH3 H3C ОН CH3 2-Methyl-2-butanol Multiplicity Integral Chemical Shift (ppm) 0.92 1.20 1.50 1.64 singlet Quartet Give reasons for your answers. (8 marks)