[IMAGE: Marieken van Nijmegen]


A computer program system for crystal structure determination by Patterson methods and direct methods applied to difference structure factors.

The system is available for MSDOS, Windows and unix.

[ICON: View the DIRDIF intro] Click here for a short introduction to DIRDIF.
(connecting to the ftp-site can take some time)


[ICON: To RU ftp server] Click here to get the DIRDIF program system files by ftp (ftp.science.ru.nl).
(connecting to the ftp-site can take some time)


[ICON: To DIRDIF examples] Click here for DIRDIF example structures.
(connecting to the ftp-site can take some time)



Click here to get DIRDIF for WINDOWS (by Louis J. Farrugia).





CCP14 DIRDIF Tutorial by Lachlan Cranswick

CCP14 WinGX/DIRDIF Tutorial by Lachlan Cranswick



The system is free of charge for non-commercial users. Please, get the DIRDIF system implemented, see that all test examples work well, and inform us on your implementation!

If you use DIRDIF, in any resulting publication, please refer to:

P.T. Beurskens, G. Beurskens, R. de Gelder, S. Garcia-Granda, R.O. Gould, and J.M.M. Smits (2008). The DIRDIF2008 program system, Crystallography Laboratory, University of Nijmegen, The Netherlands.