101 Spectroscopy WorK Questions 1. Identify the compounds that display IR spectr
ID: 513280 • Letter: 1
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101 Spectroscopy WorK Questions 1. Identify the compounds that display IR spectra with the following peaks: broad 1720, 1410 cm A c, H.o.cD: 3200-2500 B CHSC): 3030, 2820, 2760, 1715, 1605, 159S, 1495, 1410, 750, 695 cm C(CH,N 3080, 3050, 3020, 2950, 2220, 1600, 1495, 1410, 745, 695 cm D HSC): 3020, 2970, 1695, 1600, 1480, 1435, 760, 690 cm i. 2. Identify the compounds whose IR a are seen below: 4000 3500 3000 2500 2000 1750 1500 1250 1 000 750 500 fomt) 4000 3500 3000 2500 2000 1750 1500 1250 1 000 750 500 Wavenumber (cm 4000 3500 3000 2500 2000 1750 1500 1250 1000 750 500 (cm 1)Explanation / Answer
1.A C-H stetching at 2500 cm^-1, C=O stretching at 1710 cm^-1. 3200cm^-1 for -OH stertching.
Structure of the compound is CH2(Cl) COOH
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1.B) This is an aromatic compound as indicated by 3030cm^-1 and 1495 cm^-1 peak. Also it is meta substituted aromatic compound as indicated by 750 cm^-1 and 695 cm^-1 peaks. It contains a C=O shown by 1715cm^-1. The structure is 3-methylbenzaldehyde
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C) This is an aromatic compound as indicated by 3030cm^-1 and 1495 cm^-1 peak. Also it is meta substituted aromatic compound as indicated by 750 cm^-1 and 695 cm^-1 peaks. It contains a C=N as shown by 2220cm^-1 peak. Structure is 3-methylbenzonitrile
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D) This is mono substituted benznene as indicated by the peak 760 and 690 cm^-1. The srtucture is C6H5COCH3
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