Wyckoff positions

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A Wyckoff position is a point belonging to a set of points for which site symmetry groups are conjugate subgroups of the space group.^[1]. Crystallography tables give the Wyckoff positions for different space groups.

Wyckoff positions are used in calculations of crystal properties. There are two types of positions: general and special.

Contents 1 General Positions 2 Special positions 3 External links 4 References

[edit] General Positions

General positions are left invariant only for the identity operation. Each space group has only one general position.

[edit] Special positions

Special positions are left invariant by the identity operation and at least one other operation of the space group.

[edit] External links

• American Mineralogical Society Crystal Structure Database
• Bilbao Crystallographic Server

[edit] References

1. ^ Lev. Kantorovich (2004). Quantum Theory of the Solid State: An Introduction. Springer, 28.