Crystal Lattice Structures:	Creation Date: 25 Aug 2000
	Last Modified: 21 Oct 2004

The Molecular Iodine (I₂) Crystal Structure (A14)

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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• The structure here is identical to αGallium (A11) and P (black) (A17). The only difference is the spacing between the atoms.

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• Prototype: I₂
• Pearson Symbol: oC8
• Strukturbericht Designation: A14
• Space Group: Cmca (Cartesian and lattice coordinate listings available)
• Number: 64
• Other Elements with this Structure: Cl₂, Br₂
• Primitive Vectors:

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

• Basis Vectors:

  B1	=	- u A1 + u A2 + v A3	=	+ u b Y + v c Y	(I)	(8f)
  B2	=	+ u A1 - u A2 - v A3	=	- u b Y - v c Y	(I)	(8f)
  B3	=	- (½ + u) A1 + (½ + u) A2 + (½ - v) A3	=	(½ + u) b Y + (½ - v) c Y	(I)	(8f)
  B4	=	- (½ - u) A1 + (½ - u) A2 + (½ + v) A3	=	(½ - u) b Y + (½ + v) c Y	(I)	(8f)

See these vectors in LaTeX output format.

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Go back to the IIIb-VIIb elements 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).