halogenation

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Which product is the major and minor in a halogenation reaction with cl2
"For each halogen, reactivities with four types of alkane C-H bonds are normalized to the reactivity of th
2-151 O
(tert-Butyl bromidej
90%
:
Less (primary)
0.06%mi
10%
Expected (statistical) ratio
C-H bond reactivity
Experimental ratio
More (tertiary)
99.94%
In Summary Increased reactivity goes hand in hand with reduced selectivity in radied.
stitution reactions. Fluorine and chlorine, the more reactive halogens, discriminate ba
the various types of C-H bonds much less than does the less reactive bromine (Table 3.
Relative Reactivities of the Four Types of Alkane C-H Bonds
in Halogenations
Table 3-6
F•
e Cl.
(25°C, gas)
C-H bond
Br
(150°C, g
(25°C, gas)
CH3-H
RCH-H"
R,CH-H
R;C-H
0.5
1
0.004
0.002
1.2
1
1
1.4
4
80
primary C-H bond.
1700
Transcribed Image Text:"For each halogen, reactivities with four types of alkane C-H bonds are normalized to the reactivity of th 2-151 O (tert-Butyl bromidej 90% : Less (primary) 0.06%mi 10% Expected (statistical) ratio C-H bond reactivity Experimental ratio More (tertiary) 99.94% In Summary Increased reactivity goes hand in hand with reduced selectivity in radied. stitution reactions. Fluorine and chlorine, the more reactive halogens, discriminate ba the various types of C-H bonds much less than does the less reactive bromine (Table 3. Relative Reactivities of the Four Types of Alkane C-H Bonds in Halogenations Table 3-6 F• e Cl. (25°C, gas) C-H bond Br (150°C, g (25°C, gas) CH3-H RCH-H" R,CH-H R;C-H 0.5 1 0.004 0.002 1.2 1 1 1.4 4 80 primary C-H bond. 1700
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