# When comparing the IR spectra of the two compounds below, what absorption(s) would allow you to distinguish the compounds?

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When comparing the IR spectra of the two compounds below, what absorption(s) would allow you to distinguish the compounds?

HC≡CCH2N(CH2CH3)2andCH3(CH2)5C≡N

strong, broad peak at 3600−3200 cm−1
medium peak at 3500−3200 cm−1
medium peak at 3300 cm−1
medium peak at 3150−3000 cm−1
strong peak at 3000−2850 cm−1
medium peak at 2250 cm−1
strong peak at ~1700 cm−1
medium peak at at 1650 cm−1
medium peak at 1600, 1500 cm−1
no distinguishing peaks