HoF Errors: < 2 kcal/mol   < 5 kcal/mol   < 10 kcal/mol   < 20 kcal/mol   < 50 kcal/mol.   Geometries: 0: good, 100: bad

Comparison of Structures of 1 Argon-containing Solids predicted using PM7 with X-Ray

(All solids - Periodic Table - Home - PM7 Accuracy - Manual)

Average unsigned error in PM7 HoF: 0.55 kcal/mol, for 1 solids
Average unsigned error in PM6 HoF: 0.14 kcal/mol, for 1 solids 

     #     GUI   Heat of formation (Kcal/formula unit) Geometry        Species
                    Ref.        PM7        PM6        PM7    PM6
   596   (JSmol)     0.0        -0.6        0.1       23.8   23.8  Argon (Ar) (ICSD 77918)