Crystal Lattice Structures:	Reference Date: 31 Dec 2002
	Last Modified: 21 Oct 2004

The UB₁₂ (D2_f) Structure

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• 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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• Prototype: UB₁₂
• Pearson Symbol: cF52
• Strukturbericht Designation: D2_f
• Space Group: Fm3m (Cartesian and lattice coordinate listings available)
• Number: 225
• Reference: Pearson, Alloys, pp. 757-8.
• Primitive Vectors:

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

• Basis Vector:

  B1	=		0		(U)	(4a)
  B2	=	- (½ - 2 y) A1 + ½ A2 + ½ A3	=	+ ½ a X + y a Y + y a Z	(B)	(48i)
  B3	=	+ ½ A1 - (½ - 2 y) A2 + ½ A3	=	+ y a X + ½ a Y + y a Z	(B)	(48i)
  B4	=	+ ½ A1 + ½ A2 - (½ - 2 y) A3	=	+ y a X + y a Y + ½ a Z	(B)	(48i)
  B5	=	+ ½ A1 + (½ - 2 y) A2 - (½ - 2 y) A3	=	+ y a Y + (½ - y) a Z	(B)	(48i)
  B6	=	+ (½ - 2 y) A1 + ½ A2 - (½ - 2 y) A3	=	+ y a X + (½ - y) a Z	(B)	(48i)
  B7	=	+ (½ - 2 y) A1 - (½ - 2 y) A2 + ½ A3	=	+ y a X + (½ - y) a Y	(B)	(48i)
  B8	=	+ (½ - 2 y) A1 + ½ A2 + ½ A3	=	+ ½ a X + (½ - y) a Y + (½ - y) a Z	(B)	(48i)
  B9	=	+ ½ A1 + (½ - 2 y) A2 + ½ A3	=	+ (½ - y) a X + ½ a Y + (½ - y) a Z	(B)	(48i)
  B10	=	+ ½ A1 + ½ A2 + (½ - 2 y) A3	=	+ (½ - y) a X + (½ - y) a Y + ½ a Z	(B)	(48i)
  B11	=	+ ½ A1 - (½ - 2 y) A2 + (½ - 2 y) A3	=	+ (½ - y) a Y + y a Z	(B)	(48i)
  B12	=	- (½ - 2 y) A1 + ½ A2 + (½ - 2 y) A3	=	+ (½ - y) a X + y a Z	(B)	(48i)
  B13	=	- (½ - 2 y) A1 + (½ - 2 y) A2 + ½ A3	=	+ (½ - y) a X + y a Y	(B)	(48i)

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Structures indexed by: Strukturbericht Symbol Pearson Symbol Space Group Prototype

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