The Ga₃Pt₅ Structure

Last modified 5 April 2001

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.

When a = b = 2 c and x₁ = x₂ = ¼ the atoms are on the sites of a face centered cubic lattice. The data for Al₃Ni₃ in Pearson's Handbook show that this compound is very close to the ideal structure.

• Prototype: Ga₃Pt₅
• Pearson Symbol: oC16
• Strukturbericht Designation: None
• Space Group: Cmmm (Cartesian and lattice coordinate listings available)
• Number: 65
• Other compounds with this structure: Al₃Ni₅, Ga₃Ni₅, Ni₃Pd₅
• Primitive Vectors:
  • A₁ = ½ a X - ½ b Y
  • A₂ = ½ a X + ½ b Y
  • A₃ = c Z
• Basis Vectors:
  • B₁ = 0 (Ni-I)
  • B₂ = ½ A₂ = ¼ a X + ¼ b Y (Ni-II)
  • B₃ = ½ A₁ = ¼ a X - ¼ b Y (Ni-II)
  • B₄ = - x₁ A₁ + x₁ A₂ + ½ A₃ = + x₁ b Y + ½ c Z (Ni-III)
  • B₅ = + x₁ A₁ - x₁ A₂ + ½ A₃ = - x₁ b Y + ½ c Z (Ni-III)
  • B₆ = ½ A₁ + ½ A₂ = ½ a X (Al-I)
  • B₇ = + x₂ A₁ + x₂ A₂ + ½ A₃ = + x₂ a X + ½ c Z (Al-II)
  • B₈ = - x₂ A₁ - x₂ A₂ + ½ A₃ = - x₂ a X + ½ c Z (Al-II)

See these vectors in a better notation.

Go back to the Cubic Close Packed structure page.

Go back to Crystal Lattice Structure page.

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