Table 1. Observed NMR Vicinal ¹H–¹H Coupling Constants of E_Model^a.

solvent	permittivity	temp (°C)	JHH	JHH′
chloroform-d	4.8	15	6.46	2.70
		25	6.46	2.81
		35	6.46	2.89
		45	6.45	2.97
		55	6.44	3.05
acetone-d6	20.7	15	6.52	2.60
		25	6.49	2.65
		35	6.49	2.70
		45	6.48	2.76
methanol-d4	32.7	15	6.48	2.58
		25	6.47	2.61
		35	6.46	2.67
		45	6.46	2.75
		55	6.46	2.82
DMSO-d6	46.7	25	6.49	2.48
		35	6.49	2.53
		45	6.48	2.60
		55	6.47	2.69

^aIn Hz.