السلام عليكم
WinMopac7.21 is a powerful tool for semi empirical calculations of chemical molecules. This program has unified old DOS version MOPAC7 with some improvements which we have made and a convenient windows interface, and an integrated external molecular viewer(RasWin). The Windows interface includes all editing functions, a setting menu and some other features

تحميل البرنامج
http://www.psu.ru/science/soft/winmopac/d/winmopac.exe
الموقع الرسمي
http://www.psu.ru/science/soft/winmopac/index_e.html
بالتوفيق...