Which type of spectroscopy would be best/easiest to distinguish between these two compounds? CH3 CH3

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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10) Which type of spectroscopy would be best/easiest to distinguish between these two compounds
国
-CH (aldehyde)
9-10
Ar-H (aromatic)
6-8.5
(C=C-H, vinylic
4.6-5.7)
OH (alcohol or phenol)
1-5
X-C-H (X = halogen or oxygen)
3-4.5
Ar-C-H (benzylic)
2-2.7
fCH
2-2.7
(C-C-C-H, allylic
1.6-1.9)
H on saturated C, base position
8-1.6
13C NMR shifts (õ values)
saturated C, base position
C-A (A = negative atom or group
0-40
such as halogen, O, N, or C=O)
40-70
C=C, C in aromatic ring, C=N
C=O of ester, amide, acid, acid chloride
C=O of aldehyde, ketone
100-150
160-180
200-220
O UV spectroscopy
O mass spectroscopy
O C-13 NMR
O IR spectroscopy
O proton NMR
MacBook Air
Transcribed Image Text:国 -CH (aldehyde) 9-10 Ar-H (aromatic) 6-8.5 (C=C-H, vinylic 4.6-5.7) OH (alcohol or phenol) 1-5 X-C-H (X = halogen or oxygen) 3-4.5 Ar-C-H (benzylic) 2-2.7 fCH 2-2.7 (C-C-C-H, allylic 1.6-1.9) H on saturated C, base position 8-1.6 13C NMR shifts (õ values) saturated C, base position C-A (A = negative atom or group 0-40 such as halogen, O, N, or C=O) 40-70 C=C, C in aromatic ring, C=N C=O of ester, amide, acid, acid chloride C=O of aldehyde, ketone 100-150 160-180 200-220 O UV spectroscopy O mass spectroscopy O C-13 NMR O IR spectroscopy O proton NMR MacBook Air
Which type of spectroscopy would be best/easiest to distinguish between these two compounds?
CH3
CH3
A
Table of IR and 'H NMR Absorptions
IR bands in cm
O-H in alcohols and phenols, N-H
O-H in acids
3200-3600
2400-3600
3000-310
C-H vinyl
C-H alkyl
C=C and C=N
C=0
Alkene C-C
Aromatic ring C=C
aromatic
2800-3000
2100-2260
1670-1750
1620-1680
1600, 1500, 1450 (2 or 3 bands)
'H NMR delta ( 8 ) values
(acid)
10-13
CH (aldehyde)
9-10
Ar-H (aromatic)
6-8.5
(C=C-H, vinylic
4.6-5.7)
OH (alcobol or phenol)
Transcribed Image Text:Which type of spectroscopy would be best/easiest to distinguish between these two compounds? CH3 CH3 A Table of IR and 'H NMR Absorptions IR bands in cm O-H in alcohols and phenols, N-H O-H in acids 3200-3600 2400-3600 3000-310 C-H vinyl C-H alkyl C=C and C=N C=0 Alkene C-C Aromatic ring C=C aromatic 2800-3000 2100-2260 1670-1750 1620-1680 1600, 1500, 1450 (2 or 3 bands) 'H NMR delta ( 8 ) values (acid) 10-13 CH (aldehyde) 9-10 Ar-H (aromatic) 6-8.5 (C=C-H, vinylic 4.6-5.7) OH (alcobol or phenol)
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