Give one IR absorption frequency or range you could use to distinguish between the following two isomers, and designate which isomer will exhibit this absorption by a preceding letter, e.g. "al700" or "b1640-1680". Take frequencies from the table given above. a H2C=CHOCH3 and b CH3CH2CHO | cm-!

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Give one IR absorption frequency or range you could use to distinguish between the following two isomers, and designate which isomer will exhibit this absorption by a preceding
letter, e.g. "a1700" or "b1640-1680".
Take frequencies from the table given above.
a H2C=CHOCH3
and
b CH3CH2CHO
-1
cm
Transcribed Image Text:Give one IR absorption frequency or range you could use to distinguish between the following two isomers, and designate which isomer will exhibit this absorption by a preceding letter, e.g. "a1700" or "b1640-1680". Take frequencies from the table given above. a H2C=CHOCH3 and b CH3CH2CHO -1 cm
Functional Group
Absorption (cm*)
Functional Group
Absorption (cm*)
Alkane
Alkene
С-Н
2850-2960
—С-Н
3020-3100
С-С
800-1300
C=C
1640-1680
Alkyne
RCH=CH2
910 and 990
=C-H
3300
R2C=CH2
890
C=C
2100-2260
Alcohol
Alkyl halide
О-Н
3400-3650
C-Cl
600-800
С-О
1050-1150
С-Br
500-600
Amine
Arene
N-H
3300-3500
С-Н
3030
1660-2000
C-N
1030-1230
C=C
1450-1600
Aldehyde
Ketone
Non-conjugated C=O 1730
Non-conjugated C=0
1715
Conjugated C=O
1705
Conjugated C=O
1690
Carboxylic acid
Amide
1710
C=0
1690
О-Н
2500-3100
Ester
C=O
1735
Nitrile
Nitro
C=N
2210-2260
NO2
1540
Transcribed Image Text:Functional Group Absorption (cm*) Functional Group Absorption (cm*) Alkane Alkene С-Н 2850-2960 —С-Н 3020-3100 С-С 800-1300 C=C 1640-1680 Alkyne RCH=CH2 910 and 990 =C-H 3300 R2C=CH2 890 C=C 2100-2260 Alcohol Alkyl halide О-Н 3400-3650 C-Cl 600-800 С-О 1050-1150 С-Br 500-600 Amine Arene N-H 3300-3500 С-Н 3030 1660-2000 C-N 1030-1230 C=C 1450-1600 Aldehyde Ketone Non-conjugated C=O 1730 Non-conjugated C=0 1715 Conjugated C=O 1705 Conjugated C=O 1690 Carboxylic acid Amide 1710 C=0 1690 О-Н 2500-3100 Ester C=O 1735 Nitrile Nitro C=N 2210-2260 NO2 1540
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