Crystal Lattice Structures:	Creation Date: 23 Sep 2002
	Last Modified: 21 Oct 2004

The Mn₁₂Th (D2_b) 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)

---

• Prototype: Mn₁₂Th
• Pearson Symbol: tI26
• Strukturbericht Designation: D2_b
• Space Group: I4/mmm (Cartesian and lattice coordinate listings available)
• Number: 139
• Other compounds with this structure: AgBe₁₂, Al₈Cr₄Er, Fe₄Mn₈, Fe₇Mn₅, others.
• Primitive Vectors:

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

• Basis Vectors:

  B1	=		0		(Th)	(2a)
  B2	=	+ ½ A3	=	+ ¼ a X + ¼ a Y + ¼ c Z	(Mn-I)	(8f)
  B3	=	- ½ A1 + ½ A3	=	- ¼ a X + ¼ a Y + ¼ c Z	(Mn-I)	(8f)
  B4	=	- ½ A2 + ½ A3	=	+ ¼ a X - ¼ a Y + ¼ c Z	(Mn-I)	(8f)
  B5	=	+ ½ A2 + ½ A2 - ½ A3	=	+ ¼ a X + ¼ a Y - ¼ c Z	(Mn-I)	(8f)
  B6	=	+ x1 A1	=	+ x1 a X	(Mn-II)	(8i)
  B7	=	- x1 A1	=	- x1 a X	(Mn-II)	(8i)
  B8	=	+ x1 A2	=	+ x1 a Y	(Mn-II)	(8i)
  B9	=	- x1 A2	=	- x1 a Y	(Mn-II)	(8i)
  B10	=	+ x2 A1 + ½ A2	=	+ x2 a X + ½ a Y	(Mn-III)	(8j)
  B11	=	- x2 A1 + ½ A2	=	- x2 a X + ½ a Y	(Mn-III)	(8j)
  B12	=	+ ½ A1 + x2 A2	=	+ ½ a X + x2 a Y	(Mn-III)	(8j)
  B13	=	+ ½ A1 - x2 A2	=	+ ½ a X - x2 a Y	(Mn-III)	(8j)

---

Go back to the other structures page.

Go back to Crystal Lattice Structure page.

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).