Crystal Lattice Structures:	Creation Date: 12 Apr 2002
	Last Modified: 21 Oct 2004

The CoU (B_a) Structure

You can now

• see the structure from several perspectives;
• examine the structure with an external viewer; or
• download the coordinates of the atoms in these pictures in XYZ format.
• visualize the structure (Uses the JMOL Applet)

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• When x_Co = ¼ and x_U = 0, or visa versa, this structure reduces to CsCl (B2) with a_B2 = ½ a.

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• Prototype: CoU
• Pearson Symbol: cI16
• Strukturbericht Designation: B_a
• Space Group: I2₁3 (Cartesian and lattice coordinate listings available)
• Number: 199
• Other Compounds with this Structure: Ga₂Pu₃
• Primitive Vectors:

  A1	=	-½ a X + ½ a Y + ½ a Z
  A2	=	+ ½ a X - ½ a Y + ½ a Z
  A3	=	+ ½ a X + ½ a Y - ½ a Z

• Basis Vector:

  B1	=	+ 2 xCo A1 + 2 xCo A2 + 2 xCo A3	=	+ xCo a X + xCo a Y + xCo a Z	(Co)	(8a)
  B2	=	+ ½ A1 + (½ -2 xCo) A3	=	- xCo a X + (½ - xCo) a Y + xCo a Z	(Co)	(8a)
  B3	=	+ (½ -2 xCo) A2 + ½ A3	=	+ (½ - xCo) a X + xCo a Y - xCo a Z	(Co)	(8a)
  B4	=	+ (½ -2 xCo) A1 + ½ A2	=	+ xCo a X - xCo a Y + (½ - xCo) a Z	(Co)	(8a)
  B5	=	+ 2 xU A1 + 2 xU A2 + 2 xU A3	=	+ xU a X + xU a Y + xU a Z	(U)	(8a)
  B6	=	+ ½ A1 + (½ -2 xU) A3	=	- xU a X + (½ - xU) a Y + xU a Z	(U)	(8a)
  B7	=	+ (½ -2 xU) A2 + ½ A3	=	+ (½ - xU) a X + xU a Y - xU a Z	(U)	(8a)
  B8	=	+ (½ -2 xU) A1 + ½ A2	=	+ xU a X - xU a Y + (½ - xU) a Z	(U)	(8a)

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Structures indexed by: Strukturbericht Symbol Pearson Symbol Space Group Prototype

This is a mirror of an old page created at the Naval Research Laboratory Center for Computational Materials Science The 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).