Table 4. Dimerization energies (ΔE _d) and free energies (ΔG _298.15 K) for DA5 and DA11 in three types of carboxyl dimer in different media.

Diacid	Conditions	Type	ΔE d (kJ mol−1)	ΔG 298.15k (kJ mol−1)
DA5	Gas phase	I	−67.72	−12.01
		II-1	−65.03	−9.03
		II-2	−67.17	−9.90
	Ethanol	I	−35.46	14.32
		II-1	−31.75	17.33
		II-2	−33.42	24.27
	1,4-Dioxane	I	−57.49	4.58
		II-1	−55.77	1.64
		II-2	−57.64	0.98
DA11	Gas-phase	I	−67.04	−15.41
		II-1	−64.57	−12.82
		II-2	−66.88	−3.65
	Ethanol	I	−35.38	10.25
		II-1	−33.65	14.09
		II-2	−33.96	16.57
	1,4-Dioxane	I	−57.02	2.90
		II-1	−56.15	2.38
		II-2	−58.13	1.87