287
Coupling Constants in Aromatics and Heteroaromatics (J FF in Hz)
4 J FF +5.4
N
N
F
F
F
F
NO 2
F
F
F
F
F
5 J FF +6.7
3 J FF -21.2
3 J FF -19.9
4 J FF -0.4
4 J FF +6.7
3 J FF +17.9
F
F
5 J FF +17.6
F
F
F
F
F
F
3 J FF -20.3
4 J FF -3.0
5 J FF +3.9
F
F
F
F
CH 3
F
F
F
F
F
NH 2
F
F
F
F
F
3 J FF -20.8
4 J FF +6.5
5 J FF +8.6
3 J FF -20.9
3 J FF -19.4
4 J FF -2.3
4 J FF -0.1
5 J FF +5.1
3 J FF -20.5
3 J FF -20.8
4 J FF -2.4
4 J FF -7.3
4 J FF +5.1
4 J FF +8.6
N
F
F
F
F
F
5 J FF +26.3
3 J FF -20.3
3 J FF -18.1
4 J FF 0.0
4 J FF +13.7
4 J FF -15.0
5 J FF +26.0
6.2 19 F NMR Spectroscopy