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preface to fifteenth edition

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PHYSICOCHEMICAL RELATIONSHIPS 9.3<br />

TABLE 9.1<br />

Hammett and Taft Substituent Constants (Continued)<br />

Substituent<br />

Taft<br />

Hammett constants<br />

m p *<br />

constant<br />

9CH 2 C(CH 3 ) 3 0.23 0.12<br />

9CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 3 0.37<br />

Cyclopropyl9 0.07 0.21<br />

Cyclohexyl9 0.15<br />

93,4-(CH 2 ) 2 (fused) 0.26<br />

93,4-(CH 2 ) 3 9 (fused ring) 0.48<br />

93,4-(CH) 4 9 (fused ring) 0.06 0.04<br />

9CH"CH 2 0.02 0.56<br />

9CH"C(CH 3 ) 2 0.19<br />

9CH"CHCH 3 , trans 0.36<br />

9CH 2 9CH"CH 2 0.0<br />

9CH"CHC 6 H 5 0.14 0.05 0.41<br />

9C#CH 0.21 0.23 2.18<br />

9C#CC 6 H 5 0.14 0.16 1.35<br />

9CH 2 9C#CH 0.81<br />

9C 6 H 5 0.06 0.01 0.60<br />

p-CH 3 C 6 H 4 9 0.5<br />

Naphthyl9 (both 1- and 2-) 0.75<br />

9CH 2 C 6 H 5 0.46 0.22<br />

9CH 2 CH 2 9C 6 H 5 0.06<br />

9CH(CH 3 )C 6 H 5 0.37<br />

9CH(C 6 H 5 ) 2 0.41<br />

9CH 2 9C 10 H 7 0.44<br />

2-Furoyl9 0.25<br />

3-Indolyl9 0.06<br />

2-Thienyl9 1.31<br />

2-Thienylmethylene9 0.31<br />

9CHO 0.36 0.22<br />

9COCH 3 0.38 0.50 1.65<br />

9COCH 2 CH 2 0.48<br />

9COCH(CH 3 ) 2 0.47<br />

9COC(CH 3 ) 3 0.32<br />

9COCF 3 0.65 3.7<br />

9COC 6 H 5 0.34 0.46 2.2<br />

9CONH 2 0.28 0.36 1.68<br />

9CONHC 6 H 5 1.56<br />

9CH 2 COCH 3 0.60<br />

9CH 2 CONH 2 0.31<br />

9CH 2 CH 2 CONH 2 0.19<br />

9CH 2 CH 2 CH 2 CONH 2 0.12<br />

9CH 2 CONHC 6 H 5 0.0<br />

9COO 0.1 0.0 1.06<br />

9COOH 0.36 0.43 2.08<br />

9CO9OCH 3 0.32 0.39 2.00<br />

9CO9OCH 2 CH 3 0.37 0.45 2.12<br />

9CH 2 CO9OCH 3 1.06<br />

9CH 2 CO9OCH 2 CH 3 0.82<br />

9CH 2 COO 0.06<br />

9CH 2 CH 2 COOH 0.03 0.07<br />

9Cl 0.37 0.23 2.96<br />

9CCl 3 0.47 2.65<br />

9CHCl 2 1.94

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