Table 4. Evaluation of PMx Methods with and without Problematic Dimer Cases^a.

	original				no bromobenzene trimethylamine or HF
	PM6-DH+	PM6-DH2	PM6-DH2X	PM7	PM6-DH+	PM6-DH2	PM6-DH2X	PM7
A24	1.86	1.83	1.83	2.31	0.88	0.82	0.82	0.93
X31×10	3.68	3.69	3.03	2.69	1.88	1.92	2.26	1.72
all	2.16	2.20	1.89	1.76	1.44	1.48	1.59	1.52

^aErrors are presented as RMSE values, in kcal/mol.