Table 15.

Average unsigned errors in phosphorus, sulfur, and chlorine

	ΔHf (kcal mol−1)			Bond length (Å)			Dipole (D)			I.P. (eV)			Angles (Degrees)
	PM6	AM1*	No.	PM6	AM1*	No.	PM6	AM1*	No.	PM6	AM1*	No.	PM6	AM1*	No.
Phosphorus	8.3	19.1	90	0.022	0.051	56	0.57	0.49	10	0.51	0.81	12	2.5	3.3	19
Sulfur	6.5	10.6	199	0.029	0.060	71	0.36	0.64	14	0.52	0.50	45	3.1	4.1	34
Chlorine	6.1	18.2	156	0.025	0.106	69	0.55	0.60	10	0.52	0.62	25	3.4	14.6	4