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Table 10 Activation parameters for the atom transfer radical polymerization of alkyl halides catalyzed by Cu(I)Br(PMDETAa) in acetonitrile

From: On the curvature in logarithmic plots of rate coefficients for chemical reactions

Halide

a

Δu TS / kcal mol-1

σ

BrANb

10

9.69 102

11.90

2.99 10-2

0.45

MBriB

24

2.95 101

18.03

3.29 10-2

0.72

EtBriB

11

1.70 102

11.57

6.94 10-2

0.51

MBrP

3

5.39 103

9.00

4.61 10-2

0.19

ClPN

26

6.11

21.98

5.30 10-2

0.68

PEBr

1

3.00 105

8.71

6.67 10-2

6.65 10-2

ClAN

11

5.01 101

13.97

4.84 10-2

0.46

AllBr

1

8.00 105

9.84

9.18 10-2

5.88 10-2

BrPN

1

2.11 106

6.71

3.44 10-2

7.26 10-2

  1. a PMDETA = N,N,N',N',N''-pentamethyldiethylenetriamine.
  2. b the alkyl halides include three α-bromoesters, four α-halonitriles, benzyl bromide, and allyl bromide. For the exact structures see [30].
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BMC Chemistry

ISSN: 2661-801X

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