Definition:
A parsable string giving one of the symmetry operations of the space group in algebraic form. If W is a matrix representation of the rotational part of the symmetry operation defined by the positions and signs of x, y and z, and w is a column of translations defined by the fractions, an equivalent position X' is generated from a given position X by the equation: X' = WX + w. (Note: X is used to represent the bold italic x in International Tables for Crystallography Volume A, Section 5.) When a list of symmetry operations is given, it is assumed that the list contains all the operations of the space group (including the identity operation) as given by the representatives of the general position in International Tables for Crystallography Volume A. Ref: International Tables for Crystallography (2002). Volume A, Space-group symmetry, edited by Th. Hahn, 5th. ed. Dordrecht: Kluwer Academic Publishers.Example:
x,1/2-y,1/2+z | c glide reflection through the plane (x,1/4,z) |
Type: char
Mandatory item: no
Alias:Related item: _space_group_symop.generator_xyz (alternate)
Enumeration default: x,y,z
Category: space_group_symop
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