New in MOPAC2007TM
NEW parameterization (PM6) using experimental and ab initio data
More accurate* heats of formation and geometries
ALL main group elements & transition metals parameterized
Serious errors from PM3 and AM1 corrected
Crystals, surfaces & polymers with periodic boundaries
FREE to academics
For more information, click to see the MOPAC2009 brochure
Click here for background information on MOPAC
*compared to AM1, PM3 and some ab initio methods