|  | 
| ---
    Statistical Comparison of Accuracy of 
	Methods in MOPAC --- | 
| Average Unsigned Errors in sets of Molecules 
  (All ref. data) | 
|  | PM7 | PM6-D3H4 | No. |  | PM7 | PM6-D3H4 | No | 
| Standard Heats of Formation (kcal mol-1) | All elements 
  (all data) | 8.52 NOTE! | 10.39 | 3145 | Bond-lengths (Ångstroms) | All elements (all 
  data) | 0.084 NOTE! | 0.081 | 2561 | 
| Dipole Moments (Debye) | All elements 
  (all data) | 0.81 | 0.53 | 302 | Ionization Potential (eV) | All elements (all 
  data) | 0.55 | 0.50 | 380 | 
| Polarizabilities or alpha (Å3) | 0.185 | 0.250 | 76 |  |  |  |  | 
|  | 
| --- All Non-Covalent Interactions --- | 
| 
  All 
  Interactions Energies         
  Individual sets: S22 set      
  S66 set       
  L7 set     H2O 
  Dimers   
  S12L set     
  X40 set  
  
  D3H4 Ionic | 
| Stabilization Energy of Co-Crystals   
  Relative to the solid precursors | 
| 
 Heats of 
  Sublimation of molecules in the crystal going to the gas-phase | 
|   | 
| --- Proteins --- | 
| PM7 Proteins     
  PM6-D3H4 Proteins     
  Notes on Proteins | 
|  | 
| --- Solids --- | 
| AUE in ΔHf  (kcal/mol)  
  PM7: 15.1,  PM6-D3H4: 91.8  Organic compounds PM7: 6.3,  
  PM6-D3H4: 11.4 | 
| Periodic 
  Table - Graph of Densities - Graph 
  of Heats of Formation  Average Unsigned Error 
  per Element | 
| Ordered by periodic table: All compounds    Carbohydrates    Water ions 
  Layer Minerals    Moh's Scale   Alums   
  Crystal Structure Prediction, blind test   | 
| Ordered by error in PM7 densities: 
  All compounds    
   Layer Minerals   
  Moh's Scale  
  Alums  
  Crystal Structure Prediction, blind test   | 
|  | 
| --- Notes --- | 
| PM6 faults addressed in PM7  
  Faults specific to PM7        
  Caveats regarding PM7 |