Question

E. 1H-NMR SPECTRUM The 1H NMR spectrum of the geraniol and nerol products, recorded on a 400 MHz spectrometer in chloroform (peak shown in red), is shown below. Use this spectrum for the subsequent analysis. • You can zoom in to an area of the spectrum by click and dragging over the area you want. • You can zoom out by double clicking anywhere on the spectrum. • The spectrum is complicated because it is of a mixture of isomers and therefore the chemical shifts have been provided as a guide. 1H NMR Spectrum of geraniol and nerol products (mixture) ?, (ppm) The table below gives the chemical shifts of the major peaks in the 1H-NMR spectrum, referencing the labels in the chemical structures below. Assign the splitting pattern of the peak as either singlet (s), doublet (d), triplet (t), or multiplet (m), and calculate the J value to complete the table. Figure 1a. Labelled structures of geraniol product. Figure 1b. Labelled structure of nerol product. Peak Chemical Shift (ppm) Splitting Pattern J value (Hz) a (both compounds) 1.62 - 1.67 b (both compounds) 1.54 - 1.59 c (geraniol) 4.115 d (nerol) 4.06

          E. 1H-NMR SPECTRUM
The 1H NMR spectrum of the geraniol and nerol products, recorded on a 400 MHz spectrometer in chloroform (peak shown in red), is shown below. Use this spectrum for the subsequent analysis.
• You can zoom in to an area of the spectrum by click and dragging over the area you want.
• You can zoom out by double clicking anywhere on the spectrum.
• The spectrum is complicated because it is of a mixture of isomers and therefore the chemical shifts have been provided as a guide.
1H NMR Spectrum of geraniol and nerol products (mixture)
?, (ppm)
The table below gives the chemical shifts of the major peaks in the 1H-NMR spectrum, referencing the labels in the chemical structures below. Assign the splitting pattern of the peak as either singlet (s), doublet (d), triplet (t), or multiplet (m), and calculate the J value to complete the table.
Figure 1a. Labelled structures of geraniol product.
Figure 1b. Labelled structure of nerol product.
Peak
Chemical Shift (ppm)
Splitting Pattern
J value (Hz)
a (both compounds)
1.62 - 1.67
b (both compounds)
1.54 - 1.59
c (geraniol)
4.115
d (nerol)
4.06

E. 1H-NMR SPECTRUM
The 1H NMR spectrum of the geraniol and nerol products, recorded on a 400 MHz spectrometer in chloroform (peak shown in red), is shown below. Use this spectrum for the subsequent analysis.
• You can zoom in to an area of the spectrum by click and dragging over the area you want.
• You can zoom out by double clicking anywhere on the spectrum.
• The spectrum is complicated because it is of a mixture of isomers and therefore the chemical shifts have been provided as a guide.
1H NMR Spectrum of geraniol and nerol products (mixture)
?, (ppm)
The table below gives the chemical shifts of the major peaks in the 1H-NMR spectrum, referencing the labels in the chemical structures below. Assign the splitting pattern of the peak as either singlet (s), doublet (d), triplet (t), or multiplet (m), and calculate the J value to complete the table.
Figure 1a. Labelled structures of geraniol product.
Figure 1b. Labelled structure of nerol product.
Peak
Chemical Shift (ppm)
Splitting Pattern
J value (Hz)
a (both compounds)
1.62 - 1.67
b (both compounds)
1.54 - 1.59
c (geraniol)
4.115
d (nerol)
4.06

Added by Brian M.

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