282
282
6.2.3 Coupling Constants in Fluorinated Alkanes and Alkenes (J FF in
Hz)
F 3 C
CF 2
F 2 C
CF 2
FC
CF
F 3 C
F 3 C
CF 2
CF
CF 2
F 2 C
CF 2
F 2 C
SO 2 R
F 3 C
CF 3
C
CF 2
F 2 C
CF 2
F 2 C
SO 2 R
F 3 C
F 3 C
F 3 C
CF 2
F 2 C
CF 2
FC
CF
F 3 C
| 5 J FF | 6.8
| 5 J FF | 6.8
| 4 J FF | 13.6
| 4 J FF | 13
| 5 J FF | 13
F 3 C
CF 2
F 2 C
CF 2
FC
CF
F 3 C
| 3 J FF | 0.3
| 3 J FF | 6.0
| 3 J FF | 140
| 3 J FF | 10.3
| 3 J FF | 8.7
| 4 J FF | 9.8
| 4 J FF | 5.8
| 4 J FF | 21.0
| 4 J FF | 12.2
| 4 J FF | 26.1
| 5 J FF | 2.4
| 5 J FF | 7.2
| 5 J FF | 3.0
| 5 J FF | 1.5
CF 3
F 2 C
CF 2
FC
FC CF 2
CF 3
CF 3
F 2 C
CF 2
FC
FC CF 2
CF 3
| 3 J FF | 1.6
| 3 J FF | 2.3
| 3 J FF | 0.8
| 3 J FF | 13.3
| 3 J FF | 7.6
| 3 J FF | 12.5
| 4 J FF | 9.5
| 4 J FF | 8.2
| 4 J FF | 8.2
| 4 J FF | 7.6
| 4 J FF | 3.4
| 6 J FF | 4.6
| 5 J FF | 2.5
CF 3
F 2 C
CF 2
FC
FC CF 2
CF 3
F 3 C
CF 2
F 2 C
Cl
F 3 C
CF 2
F 2 C
COOH
| 3 J FF | <1
| 3 J FF | 1.8
| 4 J FF | 8.9
| 3 J FF | 1.1
| 3 J FF | 2.2, 1.1
| 4 J FF | 8.5
R: NHCH 2 C 6 H 5
Heteronuclear NMR Spectroscopy
6