Results from the transpiration method: coefficient a and b of eqn (1), standard molar sublimation/vaporisation enthalpies Δ^g_cr,lH^o_m, standard molar sublimation/vaporisation entropies Δ^g_cr,lS^o_m, and standard molar vaporisation Gibbs energies Δ^g_cr,lG^o_m at the reference temperature T = 298.15 K^a.

	a	−b	−ΔglCop,mb, J K−1 mol−1	ΔglHomc, kJ mol−1	ΔglSomd, J K−1 mol−1	ΔglGom, kJ mol−1
1,2,3-Tri-methoxy-benzene (cr)	348.4	103 494.0	37.2	92.4 ± 0.7	215.5 ± 1.3	28.2 ± 0.1
1,2,3-Tri-methoxy-benzene (liq)	348.3	102 212.3	97.9	73.0 ± 0.5	154.6 ± 1.2	26.9 ± 0.1
1,2,4-Tri-methoxy-benzene (liq)	350.8	104 844.6	97.9	75.7 ± 0.5	157.2 ± 1.2	28.8 ± 0.1
1,3,5-Tri-methoxy-benzene (cr)	333.9	101 366.0	37.2	90.3 ± 0.5	201.0 ± 1.1	30.4 ± 0.1
1,3,5-Tri-methoxy-benzene (liq)	329.3	97 850.6	97.9	68.7 ± 0.4	135.7 ± 0.5	28.2 ± 0.1
3,4,5-Tri-methoxy-toluene (liq)	366.9	109 273.7	105.8	77.7 ± 0.5	165.3 ± 1.0	28.4 ± 0.1

^aUncertainties are expressed as the standard uncertainty (at 0.68 level of confidence, k = 1).

^bFrom Table S2.

^cCalculated by eqn (2) (see primary data in Table S4).

^dCalculated by eqn (3) (see primary data in Table S4).