Table 1. Thermal Properties of Compounds 1–4 in Their E Isomeric Forms and Their Z-to-E Isomerization Process.

	E			Z → E
	Tm (°C)	ΔHm (kJ/mol)	ΔHm (J/g)	Tiso (°C)	ΔHiso (kJ/mol)	ΔHiso (J/g)	ΔHtotal (kJ/mol)	ΔHtotal (J/g)
1	83	21	97	109	51	234	72	331
2	76	19	81	110	50	216	69	297
3	113	28	114	112	49	200	77	314
4	liq.	liq.	liq.	111	50	203	50	203