Crystal Lattice Structures:	Creation Date: 13 Apr 2001
	Last Modified: 21 Oct 2004

The S₂ Si (C42) 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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• Prototype: S₂Si
• Pearson Symbol: oI12
• Strukturbericht Designation: C42
• Space Group: Ibam (Cartesian and lattice coordinate listings available)
• Number: 72
• Primitive Vectors:

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

• Basis Vectors:

  B1	=	+ ¼ A1 + ¼ A2	=	+ ¼ c Z	(Si)	(4a)
  B2	=	- ¼ A1 - ¼ A2	=	- ¼ c Z	(Si)	(4a)
  B3	=	+ y A1 + x A2 + (x+y) A3	=	+ x a X + y b Y	(S)	(8j)
  B4	=	- y A1 - x A2 - (x+y) A3	=	- x a X - y b Y	(S)	(8j)
  B5	=	(½ + y) A1 + (½ - x)A2 + (y-x) A3	=	- x a X + y b Y + ½ c Z	(S)	(8j)
  B6	=	(½ - y) A1 + (½ + x)A2 + (x-y) A3	=	+ x a X - y b Y + ½ c Z	(S)	(8j)

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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).