Crystal Lattice Structures: Creation Date: 29 Apr 2002 Last Modified: 21 Oct 2004

# The CrSi2 (C40) Structure

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• Pearson's Handbook does not give atomic positions for CrSi2, so we used the data for Ge2Ta to draw the pictures.

• Prototype: CrSi2
• Pearson Symbol: hP9
• Strukturbericht Designation: C40
• Space Group: P6222 (Cartesian and lattice coordinate listings available)
• Number: 180
• Other compounds with this structure: Ge2Ta, Ge2V, HfSn2, Ge2Nb, MoSi2, Si2Ta, Si2V, Si2W
• Primitive Vectors:  A1 = ½ a X - ½ 3½ a Y A2 = ½ a X + ½ 3½ a Y A3 = c Z
• Basis Vectors:  B1 = ½ A1 + ½ A3 = ¼ a X - ¼ 3½ a Y + ½ c Z (Cr) (3d) B2 = ½ A2 + 1/6 A3 = ¼ a X + ¼ 3½ a Y + 1/6 c Z (Cr) (3d) B3 = ½ A1 + ½ A2 + 5/6 A3 = ½ a X + 5/6 c Z (Cr) (3d) B4 = + x A1 + 2 x A2 + ½ A3 = + 3/2 x a X + ½ 3½ x a Y + ½ c Z (Si) (6j) B5 = - 2 x A1 - x A2 + 1/6 A3 = - 3/2 x a X + ½ 3½ x a Y + 1/6 c Z (Si) (6j) B6 = + x A1 - x A2 + 5/6 A3 = - 3½ x a Y + 5/6 c Z (Si) (6j) B7 = - x A1 - 2 x A2 + ½ A3 = - 3/2 x a X - ½ 3½ x a Y + ½ c Z (Si) (6j) B8 = + 2 x A1 + x A2 + 1/6 A3 = + 3/2 x a X + ½ 3½ x a Y + 1/6 c Z (Si) (6j) B9 = - x A1 + x A2 + 5/6 A3 = + 3½ x a Y + 5/6 c Z (Si) (6j)

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 Structures indexed by: This is a mirror of an old page created at theNaval Research LaboratoryCenter for Computational Materials ScienceThe maintained successor is hosted at http://www.aflowlib.org/CrystalDatabase/ and published as M. Mehl et al., Comput. Mater. Sci. 136 (Supp.), S1-S828 (2017).