The symmetry operator for a b-glide plane passing through the point (0,0,0) and whose normal is parallel to the X direction is given by -x,1/2+y,z. Note that it is the x value that changes sign, but that the glide operation adds 1/2 to the y value in this instance.

© Copyright 1995-2006.  Birkbeck College, University of London. Author(s): Jeremy Karl Cockcroft