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Figure 5
The Voronoi polyhedron of the point located at the center of the I-type cell. Such a polyhedron has tetragonal symmetry and possesses three kinds of faces: two squares perpendicular to the fourfold axis, four smaller rhombuses across the twofold axes and eight distorted hexagons across the space diagonals of the unit cell.

Journal logoBIOLOGICAL
CRYSTALLOGRAPHY
ISSN: 1399-0047
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