The compound shown will give clues to its structure by which of the following spectral features ? (Assume there is no magnetic coupling with the aldehyde proton.)
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A strong , broad absorption at about 3300 wavenumbers (IR)
A strong , sharp absorption at about 1730 wavenumbers (IR) (True)
A triplet at about delta = 6.8 ppm , integrating for 2 protons (NMR)
A sharp singlet in the region of delta = 3.5 ppm (NMR)
An important pair of moderately strong absorptions at about 800 and 900 wavenumbers (IR)
1 answer