Bilbao Crystallographic Server arrow WYCKSPLIT Help

Wyckoff Positions Splitting

Splitting of the Wyckoff positions ...

The program WYCKSPLIT calculates the splitting of the Wyckoff position when the symmetry is reduced from one given by the group G to one given by a group H which is a subgroup of G.

As an input data the program needs the numbers of both groups as given in the International Tables for Crystallography, vol.A, and the transformation matrix that relates the basis of the supergroup with that of the subgroup.

If you do not know the numbers of the groups, use the buttons [choose it] to select them from the table with the space groups symbols.

If you do not know the transformation relating both bases, use the link to the other programs on the Bilbao Crystallographic Server to find it.

NOTE: If one of the groups you are interested in has more than one conventional settings, and you do not want to use the default choice you can choose the setting from the table with space group numbers and symbols by clicking over [choose it].

When all of the input data is complete, click on the button [Show group-subgroup data] to see the list with the Wyckoff positions of the group and select the one for which the splitting should be calculated.

[ More about the program ]

If you are using this program in the preparation of a paper, please cite it in the following form:

Kroumova et. al. J. Appl. Cryst. (1998), 31, 646.

If you are interested in other publications related to Bilbao Crystallographic Server, click here
Conventional Settings

Please, enter the sequential numbers of group and subgroup as given in International Tables for Crystallography, Vol. A:
Enter supergroup or
Enter subgroup or
Please, define the transformation relating the group and the subgroup bases.
(NOTE: If you don't know the transformation click here for possible workarounds)
Linear part:
Origin shift:

[Bilbao Crystallographic Server Main Menu]

Bilbao Crystallographic Server
For comments, please mail to