Question

60 Transmittance [%] 70 80 90 100 RUKER 3500 3328,20 3000 2929.49 2861.33 2500 Wavenumber cm-1 2000 1500 1465.75 - 1053.70 1000 728.47 500

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which alcohol is being shown by the spectra

Answer 1

From the IR spectrum it is evident that the molecule consists of -OH group,shown by the peak at 3300 cm^-1.

The peak at 3000 cm^-1 shows the C-H stretching frequencies.

From the NMR spectrum, the triplet at 0.9 ppm shows a CH₃ which is attached to neighbouring CH₂ group.

The multiplet at 1.4 ppm shows the -CH₂-CH₂-CH₂

The Quartret at 1.6 ppm shows the CH₂ attached to CH_3.

The singlet at 2.2 ppm shows the OH group.

Hence the given alcohol is butanol

CH₃-CH₂-CH₂-CH₂-OH