. 2021 Mar 1;86(6):4638–4645. doi: 10.1021/acs.joc.1c00051

Table 2. Solvent Effect on the Coupling Constant (Hz) of 1d.

solvent	ε^a	⁵J (H^α, F) (Hz)	⁴J (C^α, F) (Hz)
DMSO-d₆	47.2	4.12	5.78
CH₃OH-d₄	33.0	4.57	6.74
acetone-d₆	21.0	4.57	6.74
CH₂Cl₂-d₂	8.93	5.03	7.71
CHCl₃-d₁	4.81	5.03	7.71
benzene-d₆	2.28	5.03	7.71

ε = Dielectric constant.²⁴