Organic Chemistry: Principles and Mechanisms (Second Edition)
2nd Edition
ISBN: 9780393663556
Author: Joel Karty
Publisher: W. W. Norton & Company
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Question
Chapter 15, Problem 15.16P
Interpretation Introduction
Interpretation:
The frequencies of the stretching vibrations indicated in the given molecule are to be estimated by using Table 15-2.
Concept introduction:
The frequencies of the stretching vibrations are estimated from the type of bond and the frequency range given for that bond. Also, the frequency range for the given type of bond is identified by the compound class to which that bond resembles in the molecule.
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The DEPT-90 spectrum exhibits
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The DEPT-135 spectrum exhibits
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positive ▾
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▼
1,2,6
✓
in the sp2 hybridized region 100-150
C3 and C4 ▼
signal(s) (only the quaternary carbon atoms,
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Watch videos (LINKS) on page 2 and answer questions
One infrared spectra (1) is given below.
(a) Analyze the spectra and tabulate important bands.
(b) Circle the possible molecular structure corresponding to the given spectra.
Spectra A:
4000 2700 cm ¹
2700- 2000 cm ¹
2000 1600 cm
1600 - 400 cm ¹
2.5
100
80
Region
60
40
20
0
OL
4000
(a)
COMPOUNDS
A
OH
3500
3
-1
3000
B
Absorption, cm -1
3.5
4
2500
4.5
SPECTRA 1
CH, O
CH, C C CH,
H
H
NO
H
wavelength (um)
5 5,5 6
2000 1800 1600
wavenumber (cm)
wavelength (um)
C
Functional group
CIC
C-OH
CH,
7
8
1400 1200
D
9 10
n
1000
CH₂CH₂OH
-
11
Base Value
12 13 14 15 16
800
600
E
Jun
CH₂-C-N
Q4/
S
204.9
S
162.2
d
136.5 120.0 118.2
131.3 119.2
OH
а
er
I'm
2
26.6
ppm
Use the above proton -decoupled Bc spectrum to deduce whether
it belongs to compound & or
compound Ⓒ. The multiplicity
of these signals in the off-resonance Bc spectrum is shown as a letter.
Chapter 15 Solutions
Organic Chemistry: Principles and Mechanisms (Second Edition)
Ch. 15 - Prob. 15.1PCh. 15 - Prob. 15.2PCh. 15 - Prob. 15.3PCh. 15 - Prob. 15.4PCh. 15 - Prob. 15.5PCh. 15 - Prob. 15.6PCh. 15 - Prob. 15.7PCh. 15 - Prob. 15.8PCh. 15 - Prob. 15.9PCh. 15 - Prob. 15.10P
Ch. 15 - Prob. 15.11PCh. 15 - Prob. 15.12PCh. 15 - Prob. 15.13PCh. 15 - Prob. 15.14PCh. 15 - Prob. 15.15PCh. 15 - Prob. 15.16PCh. 15 - Prob. 15.17PCh. 15 - Prob. 15.18PCh. 15 - Prob. 15.19PCh. 15 - Prob. 15.20PCh. 15 - Prob. 15.21PCh. 15 - Prob. 15.22PCh. 15 - Prob. 15.23PCh. 15 - Prob. 15.24PCh. 15 - Prob. 15.25PCh. 15 - Prob. 15.26PCh. 15 - Prob. 15.27PCh. 15 - Prob. 15.28PCh. 15 - Prob. 15.29PCh. 15 - Prob. 15.30PCh. 15 - Prob. 15.31PCh. 15 - Prob. 15.32PCh. 15 - Prob. 15.33PCh. 15 - Prob. 15.34PCh. 15 - Prob. 15.35PCh. 15 - Prob. 15.36PCh. 15 - Prob. 15.37PCh. 15 - Prob. 15.38PCh. 15 - Prob. 15.39PCh. 15 - Prob. 15.40PCh. 15 - Prob. 15.41PCh. 15 - Prob. 15.42PCh. 15 - Prob. 15.43PCh. 15 - Prob. 15.44PCh. 15 - Prob. 15.45PCh. 15 - Prob. 15.46PCh. 15 - Prob. 15.47PCh. 15 - Prob. 15.48PCh. 15 - Prob. 15.49PCh. 15 - Prob. 15.50PCh. 15 - Prob. 15.51PCh. 15 - Prob. 15.52PCh. 15 - Prob. 15.53PCh. 15 - Prob. 15.54PCh. 15 - Prob. 15.55PCh. 15 - Prob. 15.56PCh. 15 - Prob. 15.57PCh. 15 - Prob. 15.58PCh. 15 - Prob. 15.59PCh. 15 - Prob. 15.60PCh. 15 - Prob. 15.61PCh. 15 - Prob. 15.62PCh. 15 - Prob. 15.63PCh. 15 - Prob. 15.64PCh. 15 - Prob. 15.65PCh. 15 - Prob. 15.66PCh. 15 - Prob. 15.67PCh. 15 - Prob. 15.68PCh. 15 - Prob. 15.1YTCh. 15 - Prob. 15.2YTCh. 15 - Prob. 15.3YTCh. 15 - Prob. 15.4YTCh. 15 - Prob. 15.5YTCh. 15 - Prob. 15.6YTCh. 15 - Prob. 15.7YTCh. 15 - Prob. 15.8YTCh. 15 - Prob. 15.9YTCh. 15 - Prob. 15.10YTCh. 15 - Prob. 15.11YTCh. 15 - Prob. 15.12YTCh. 15 - Prob. 15.13YTCh. 15 - Prob. 15.14YTCh. 15 - Prob. 15.15YTCh. 15 - Prob. 15.16YTCh. 15 - Prob. 15.17YTCh. 15 - Prob. 15.18YTCh. 15 - Prob. 15.19YTCh. 15 - Prob. 15.20YTCh. 15 - Prob. 15.21YTCh. 15 - Prob. 15.22YTCh. 15 - Prob. 15.23YTCh. 15 - Prob. 15.24YTCh. 15 - Prob. 15.25YTCh. 15 - Prob. 15.26YTCh. 15 - Prob. 15.27YTCh. 15 - Prob. 15.28YTCh. 15 - Prob. 15.29YTCh. 15 - Prob. 15.30YT
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