I need additional information about CS MOPAC that is not covered in the Chem3D manual.
There are two good sources of information on MOPAC.
1.The CD-ROM that your CambridgeSoft software came on. If you purchased a product that contains CS MOPAC Pro, check on your CD-ROM. For example, check for the MOPAC manual in a "Manuals" or "Documentation" folder on the top level of your CambridgeSoft cd-rom.
2.The following web site is the official MOPAC home page: http://www.cachesoftware.com/mopac/index.shtml