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preface to fifteenth edition

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SPECTROSCOPY 7.109<br />

TABLE 7.58<br />

Carbon-Carbon Spin Coupling Constants (Continued)<br />

Structure* J CC,Hz<br />

Structure J CC,Hz<br />

C 6 H 5 I<br />

1-2<br />

2-3<br />

3-4<br />

60<br />

53<br />

58<br />

3<br />

J 2-5 8.6<br />

C 6 H 5 9OCH 3<br />

2-3<br />

58<br />

3-4<br />

56<br />

C 6 H 5 NH 2<br />

1-2<br />

2-3<br />

3-4<br />

61<br />

58<br />

3<br />

J 2-5<br />

C 6 H 5 CH 3 44<br />

57<br />

7.9<br />

54<br />

Pyridine<br />

2-3<br />

3<br />

J 2-5 14<br />

3-4<br />

56<br />

Furan 69<br />

Pyrrole 69<br />

Thiophene 64<br />

H 2 C"C"C(CH 3 ) 2 100<br />

9C#C9 170–176<br />

Structure 2<br />

J ,Hz CC<br />

CH 3 9CO"CH 3 16<br />

CH 3 9C#CH 11.8<br />

CH 3 CH 2 9CN 33<br />

* R, alkyl group; Ar, aryl group.<br />

TABLE 7.59<br />

Carbon-Fluorine Spin Coupling Constants<br />

Structure* J CF,Hz<br />

Structure* J CF,Hz<br />

F<br />

C<br />

H<br />

F<br />

C<br />

F<br />

F<br />

C<br />

F<br />

F<br />

C<br />

F<br />

F<br />

C<br />

F<br />

F<br />

C<br />

H<br />

H<br />

H<br />

H<br />

H<br />

F<br />

H<br />

F<br />

F<br />

F<br />

CH 3<br />

H<br />

Ar<br />

F9CH 2 CH 2 9 or F9CR 3<br />

p-F9C 6 H 4 9OR<br />

p-F9C 6 H 4 9R<br />

158<br />

235<br />

274<br />

259<br />

271<br />

165<br />

167<br />

237<br />

241<br />

p-F9C 6 H 4 9CF 3<br />

p-F9C 6 H 4 9CO9CH 3<br />

p-F9C 6 H 4 9NO 2<br />

F9C 6 H 5<br />

2<br />

JCF<br />

21.0<br />

3<br />

JCF<br />

7.7<br />

4<br />

JCF<br />

3.4<br />

F<br />

F<br />

F<br />

F<br />

F<br />

R<br />

F<br />

H<br />

F<br />

F<br />

C"CH 2<br />

C"O<br />

C"O<br />

C"O<br />

C<br />

H<br />

CH 2<br />

OH<br />

252<br />

253<br />

257<br />

244<br />

287<br />

308<br />

353<br />

369<br />

241<br />

* Ar, aryl group; R, alkyl group.

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