1. Write the IR spectra to the corresponding structures below and cite the applicable peaks A. Ethyl acetateB. CyclohexanoneC. Propionic acid Simplified Infrared Correlation ChartType of Vibration(stretch)Frequency (cm")3000-2850IntensityC-HAlkanes-CH3(bend)1450 and 1375-CH(bend)1465Alkenes(stretch)3100-3000m(out-of-plane bend)(stretch)(out-of-plane bend)(stretch)1000-650Aromatics3150-3050900-690AlkyneAldehyde-33002900-28002800-2700C-CAlkanenot interpretatively usefulAlkene1680-1600m-wAromatic1600 and 1475m-wCCAlkyne2250-2100m-wC=OAldehyde1740-1720Ketone1725-1705Carboxylic Acid1725-1700Ester1750-1730Amide1670-1640AnhydrideAcid Chloride1810 and 17601800C-OAlcohols, Ethers, Esters, Carboxylic Acids, Anhydrides 1300-1000O-HAlcohols, PhenolsFree3650-3600H-bonded3500-3200Carboxylic Acids3400-2400Primary and Secondary Amines and Amides(stretch)(bend)N-H3500-3100m1640-1550m-sC-NAmines1350-1000m-sC-NImines and Oximes1690-1640w-sCNNitriles2260-2240X-C=YAllenes, Ketenes, Isocyanates, Isothiocyanates2270-1950m-sN-ONitro (R-NO2)1550 and 1350S-HMercaptans2550S=0Sulfoxides1050Sulfones, Sulfonyl Chlorides, Sulfates, Sulfonamides1375-1300 and1200-1140C-XFluoride1400-1000Chloride800-600Bromide, lodide<667E E E

Infrared spectrum - it is a vibrational spectroscopy which helps in structure determination and…

Answered: Write the IR spectra to the…

Write the IR spectra to the corresponding structures below and cite the applicable peaks A. Ethyl acetate B. Cyclohexanone C. Propionic acid

Physical Chemistry

2nd Edition

ISBN:9781133958437

Author:Ball, David W. (david Warren), BAER, Tomas

Publisher:Ball, David W. (david Warren), BAER, Tomas

Chapter16: Introduction To Magnetic Spectroscopy

Section: Chapter Questions

Problem 16.49E

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Concept explainers

Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.

Question

1. Write the IR spectra to the corresponding structures below and cite the applicable peaks

A. Ethyl acetate

B. Cyclohexanone

C. Propionic acid

Simplified Infrared Correlation Chart
Type of Vibration
(stretch)
Frequency (cm")
3000-2850
Intensity
C-H
Alkanes
-CH3
(bend)
1450 and 1375
-CH
(bend)
1465
Alkenes
(stretch)
3100-3000
m
(out-of-plane bend)
(stretch)
(out-of-plane bend)
(stretch)
1000-650
Aromatics
3150-3050
900-690
Alkyne
Aldehyde
-3300
2900-2800
2800-2700
C-C
Alkane
not interpretatively useful
Alkene
1680-1600
m-w
Aromatic
1600 and 1475
m-w
CC
Alkyne
2250-2100
m-w
C=O
Aldehyde
1740-1720
Ketone
1725-1705
Carboxylic Acid
1725-1700
Ester
1750-1730
Amide
1670-1640
Anhydride
Acid Chloride
1810 and 1760
1800
C-O
Alcohols, Ethers, Esters, Carboxylic Acids, Anhydrides 1300-1000
O-H
Alcohols, Phenols
Free
3650-3600
H-bonded
3500-3200
Carboxylic Acids
3400-2400
Primary and Secondary Amines and Amides
(stretch)
(bend)
N-H
3500-3100
m
1640-1550
m-s
C-N
Amines
1350-1000
m-s
C-N
Imines and Oximes
1690-1640
w-s
CN
Nitriles
2260-2240
X-C=Y
Allenes, Ketenes, Isocyanates, Isothiocyanates
2270-1950
m-s
N-O
Nitro (R-NO2)
1550 and 1350
S-H
Mercaptans
2550
S=0
Sulfoxides
1050
Sulfones, Sulfonyl Chlorides, Sulfates, Sulfonamides
1375-1300 and
1200-1140
C-X
Fluoride
1400-1000
Chloride
800-600
Bromide, lodide
<667
E E E

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