Peak finding results for: 4/10/18 4:07:03 PM Frequency: 399.19 - 3999.64, thresh

Question

Peak finding results for: 4/10/18 4:07:03 PM Frequency: 399.19 - 3999.64, threshold: 32.994, sensitivity: 50.00 Peak finding result table: Peak# Position 3416.51 2095.40 1643.15 Height 0.388 20.319 1.545 1370.56 6.846 1238.37 7.187 1093.05 11.883 Peak finding results for: 4/10/18 4:07:03 PM Frequency: 400.00 - 3999.64, threshold: 32.994, sensitivity: 50.00 Peak finding result table: Peak# Position 3416.51 2095.40 1643.15 Height 0.388 20.319 1.545 1093.05 1370.56 6.846 1238.37 7.187 11.883 50.0 4/10/18 4:07:03 PM 40.0 30.0 %Transmittance | 20.0 2095.40 10.0 3416.51 1643.15 1370.56 1238.37 1093.05 0.0 3800 3600 3400 3200 3000 2800 2600 2400 2200 2000 Wavenumbers (cm-1) 1800 1600 1400 1200 1000 800 600

Explanation / Answer

Using IR we can predict only the functional group present in the compound and we cannot identify the complete structure of the compound

In above IR the Band at 3400 cm-1 is due to hydroxy group (-OH)

Band at 2100 cm-1 is due to alkyne group

Band at 1643 cm-1 is due to carbonyl group (-C=O) adjusant to unsaturated group

Therefore compound must-have alkyne adjusant to carboxylic acid group.

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